Arsenal 1-5 Bayern Munich, Napoli 1-3 Real Madrid: UEFA Champions League last 16 as it happened

Full-time: Arsenal 1-5 Bayern Munich

Arsenal's Champions League campaign was ended in Germany, but they managed to squeeze in another bout of humiliation during the encore.

It all started so well when Theo Walcott fired past Manuel Neuer early in the first-half, but once again, the departure of Laurent Koscielny from proceedings - this time via a sending off - kicked off another capitulation.

Robert Lewandowski dealt the killer blow before Arjen Robben, Arturo Vidal and Douglas Costa ripped the Gunners' bruised carcass apart. The referee played his part in Arsenal's downfall, but Arsene Wenger's men are specialists in shooting themselves in the foot.

Into stoppage time at The Emirates Stadium, but there aren't many people in the ground to witness it.

Wenger's men are looking for a consolation but it's not forthcoming.

Bellerin tries to add a dash of comfort to the scoreline but drags his shot wide.

Arsenal's rare foray forward ends in disappointment, just like their European campaign.

Sanches picks out the fabulous run of Costa, who squares it for Vidal, and the Chilean can't miss. It really is that simple for Bayern right now.

GOAL! Arsenal 1-5 Bayern Munich (Vidal)

Bayern Munich almost get behind Arsenal again but Bellerin tidies up in the nick of time. There are more goals in this game for Ancelotti's men, if they want them.

Alaba flashes a dangerous cross across the face of goal that only needed a touch. Bayern playing exhibition football now.

Mustafi's loose pass is picked up on by Alonso. He rolls it into the path of Vidal, who fools Ospina by chipping the ball decadently over the Colombian and into the net.

It's embarrassing again from the Gunners.

GOAL! Arsenal 1-4 Bayern Munich (Vidal)

Costa picks up the ball in acres of space on the right hand side, drifts towards the area and evades Mustafi before curling an exquisite effort into the bottom corner.

Excellent from the Brazilian who had only just entered the field of play. Bayern's other substitutions have just been made, Kimmich and Sanches are on for Ribery and Thiago.

GOAL! Arsenal 1-3 Bayern Munich (Costa)

The game is being played out under the thumb of Bayern. The Gunners haven't let their heads drop and are trying to probe but the Germans are comfortable and utilise the space when they can.

Lewandowski almost compiled Arsenal's misery with a third but his shot cannoned off the post. He then races clear of Xhaka but his touch fails him as the ball rolls to Ospina.

Arsenal make a triple change with Coquelin, Ozil and Perez set to be introduced.

Aaron Ramsey, Olivier Giroud and Alexis Sanchez make way.

Despair for Arsenal.

Jubilation for Bayern...

Arsenal fail to clear on a number of occasions and are made to pay when Robben robs Sanchez and finishes expertly past Ospina.

The Dutchman scored the opener in Munich and has helped seal Arsenal's fate in London. He is set to be replaced by Douglas Costa.

GOAL! Arsenal 1-2 Bayern Munich (Robben)

Bellerin's distribution has been very disappointing this evening. Time and time again he gets himself into a dangerous position but his delivery or pass constantly lets him down.

Ospina produces a fine save from Lewandowski, who combined brilliantly with Vidal. The Pole's movement so impressive at times, glides along the ground.

Javi Martinez almost gives Bayern the lead on the night after some excellent work from Thiago, but the Spaniard puts his effort on the roof of the net. Bayern in cruise control at the moment.

GOAL! Napoli 1-2 Real Madrid (Ramos)

Oxlade-Chamberlain bursts forward for the Gunners but is stopped in his tracks and eventually shown a yellow card for kicking out at Rafinha. Frustrations boiling over.

The moment Arsenal's Champions League hopes were ended for good.

Lewandowski effectively kills the tie, sending Ospina the wrong way from the spot. A shame.

GOAL! Arsenal 1-1 Bayern Munich (Lewandowski, pen)

It's all gone wrong for Arsenal, and Laurent Koscielny in particular.

The Frenchman has been sent off for shoving Lewandowski in the area. The referee initially cautioned him, but bizarrely gave him a red moments later after discussing the incident with the fourth official.

RED CARD FOR KOSCIELNY!

PENALTY TO BAYERN MUNICH!

GOAL! Napoli 1-1 Real Madrid (Ramos)

Giroud misses a guilt-edged chance. The Frenchman connects with a Ramsey cross but gets his header all wrong and spurns a huge opportunity for Wenger's men.

Really should've done better after some excellent work from Ramsey, who has been quiet.

Bayern have the ball in the net through Hummels but the German is called offside. Let-off, Arsenal were sleeping there.

Giroud gets things going again. An early goal in the second period will be vital, for both teams.

Second half about to get underway.

Bayern fans unhappy with the price of a ticket for this evening.

Half-time: Arsenal 1-0 Bayern Munich

Encouraging half from the Gunners, who deservedly lead through Theo Walcott. The rapid forward has been a thorn in Bayern's side all game and has given his side hope with his rasping effort.

The Gunners have had other opportunities to score through Walcott and Giroud, and they perhaps should have had a penalty when Walcott was clipped by Alonso.

It's not been all one-way traffic, though. Lewandowski should've scored for Bayern, while Robben has looked menacing every time he marauds forward despite his advancing years.

It's poised finely for the second half. Can Arsenal do it?

Martinez picks up a yellow card after dragging back Ramsey. Arsenal have a free-kick in a dangerous area, but Sanchez hits a curling effort straight at Neuer.

Arsenal counter with gusto but Oxlade-Chamberlain's pass is too heavy for Bellerin, who makes nothing of the promising attack.

Bayern then spring a counter of their own, ending in Robben testing the largely untroubled Ospina.

Elsewhere, Mertens has just hit the post in Naples. The Belgian inches away from giving Napoli the lead over Real Madrid in the tie.

Walcott and Alaba have both been cautioned for the worst display of handbags in the history of handbaggery. 1-0 Arsenal still.

How have Bayern Munich not scored?

Robben cuts inside and dinks a ball into the path of the usually lethal lewandowski, but the Pole scuffs his tame effort wide.

Major let-off for Arsenal.

Vidal tries the spectacular from all of 35 yards but his effort doesn't trouble Cech.

Straight after, Monreal and Sanchez combine well to find Giroud, who fails to test Neure with his effort.

Bayern beginning to creak a touch. Can't help feel the added pace and power of Welbeck instead of the capable but one-paced Giroud would have really troubled Ancelotti's men.

Claims for an Arsenal penalty as Alonso challenges Walcott but the referee waves away the protests. Replays show that Arsenal can count themselves a tad unfortunate there.

Mustafi finds Walcott quite brilliantly but the forward only finds the side netting from the same angle in which he scored. Very bright, but the Gunners could do with a second before the interval.

GOAL! Napoli 1-0 Real Madrid (Mertens)

The on-fire Dries Mertens makes things very interesting in Naples.

Oxlade-Chamberlain wins a corner after sublimely spinning away from Vidal's attentions. Ramsey absolutely balloons an effort from the resulting set-piece. Almost 30 minutes gone.

Theo Walcott has given the Gunners hope.

The referee is not letting anything go tonight. Good to see some consistency and the flow of game remains unharmed.

Robben wins Bayern Munich a corner which Koscielny heads away. Ribery is then adjudged to have fouled Bellerin, but it seemed to be a case of weakness from the Spaniard.

Nick Howson at The Emirates Stadium

"Those pre-match protests seems a world away as Theo Walcott gives Arsenal a glimmer of hope. Not Manuel Neuer's finest hour, who a woeful attempt to keep out Walcott's near-post drive. If they can get another....."

Arsenal have their tails up here, and why not? Bellerin thunders into Ribery and the ball trickles to Walcott, who evades Hummels but fails to catch up with the ball. Spirited stuff nonetheless.

Arturo Vidal was close to dashing Arsenal hopes but fouled Bellerin as he headed towards goal.

Walcott, who has been excellent so far, bundled through a crowd of players and fired an quite exquisite shot from an acute angle that gave Neuer no chance.

Quite stunning from the England international, who has sparked an iota of life into Arsenal's Champions League hopes.

GOAL! Arsenal 1-0 Bayern Munich (Walcott)

Arsenal almost exploit Bayern again but Sanchez and Walcott can't sort out their feet properly.

Walcott is in the thick of the action right now, he almost got on the end of an Oxlade-Chamberlain cross but Martinez was on hand to glance the ball out for a corner, which came to nothing.

Neuer had to be at his best to deny Arsenal an early goal.

Nick Howson at The Emirates Stadium

"No evidence of the discontent in which the evening began, inside The Emirates. Arsenal have looked relatively decent, with Bayern happy to attack when the opportunity arises."

Good work from Bellerin forces a corner for Arsenal. It's initially cleared but Xhaka finds Sanchez, who feeds Mustafi. The German loops it up into the danger zone but Giroud cannot truly connect.

Walcott almost puts Arsenal one up but Manuel Neuer shows why he's the best goalkeeper in the business and patrols his area superbly. Walcott needed a crsiper touch, but encouraging signs from the Gunners.

Robben tests Monreal again by cutting inside and attempting a shot, but his effort deflects wide for a corner.

From the set piece, Alaba fires wide, but the Austrian and Dutchman are featuring heavily already as Bayern look to stretch Arsenal from the flanks.

Bayern almost get around the back of Arsenal through Robben but the Dutchman cannot conjure anything meaningful. The Bavarian giants are already asserting their dominance.

Alexis Sanchez is involved from the off. He tries to find the run of Oxlade-Chamberlain but the England international can't latch onto the pass. Nice idea, poor execution. Four minutes gone.

Play has been stopped almost immediately because Bayern fans have thrown an obscene amount of toilet paper onto the pitch.

Those pesky Germans.

We are underway at The Emirates!

It is being reported that Danny Welbeck is suffering from illness, not an injury. A shred of comfort for Gunners fans, perhaps.

Tasos Sidiropolous is the referee tonight. Kick off just seconds away.

A recap of this evening's team news:

Bayern Munich: Neuer, Rafinha, Hummels, Martinez, Alonso, Vidal, Ribery, Thiago, Robben, Lewandowski.

Arsenal: Ospina, Bellerin, Mustafi, Koscielny, Monreal, Xhaka, Ramsey, Walcott, Oxlade-Chamberlain, Giroud, Sanchez.

The lights show is in full swing. Teams in the tunnel, kick-off less than five minutes away.

BREAKING: Danny Welbeck has sustained an injury in the warm-up. Olivier Giroud replaces him in the starting line-up.

Wenger on future: "I'm at the end of my contract and will give my best until the last day, and if I get another contract, or sign one, I will continue to give my best."

Wenger on Sanchez: "That is completely an untrue story, I gave the honest explanation of my team on Saturday. He is a great player, he played at Bayern, Chelsea, Man City, it's not the reason why we lost."

Robert Pires is letting everyone behind the curtain.

"Arsene Wenger, you're killing our club."

Perhaps a bit strong from the protesting supporters, but Arsenal certainly need a shot in the arm. Could tonight bring the antidote to the Gunners' failing season?

It all kicks off in half an hour.

Nick Howson at The Emirates Stadium

"Aside from debating whether Arsenal can achieve the improbable tonight, the question has to be whether the discontent from outside the stadium will filter into the stands. Criticism of Wenger has generally been reserved for away matches [remember Chelsea?] but should it influence the home support then it might send a strong message to messieurs Gazidis and Kroenke."

Sad scenes, really.

Not bad going from the admirable Frenchman. Can he record his best ever European night at the Emirates against Bayern?

A video of the protests. What will Wenger think of that?

An update on the protests promised earlier.

The boy Sanchez can play a bit, can't he...

So Sanchez starts, and Mesut Ozil is on the bench. Wenger has gone with pace in attack with Walcott, Oxlade-Chamberlain and Welbeck and will presumably instruct his side to play on the counter-attack.

While Bayern's central areas are full of quality, it does lack speed and agility, especially in the likes of Alonso and Martinez.

The Gunners can't go too gung-ho, though. Bayern have an abundance of attacking talent both in the side and on the bench and won't need a second invitation to hurt Arsenal.

TEAM NEWS

Arsenal: Ospina, Bellerin, Mustafi, Koscielny, Monreal, Xhaka, Ramsey, Walcott, Oxlade-Chamberlain, Welbeck, Sanchez.

TEAM NEWS

Bayern Munich: Neuer, Rafinha, Hummels, Martinez, Alonso, Vidal, Ribery, Thiago, Robben, Lewandowski.

Nick Howson at The Emirates Stadium

"Fair to say it might be a toxic atmosphere inside The Emirates tonight; a couple of hundred fans are camped outside the stadium to protest against manager Arsene Wenger, ahead of the second leg of a tie he claims the club have a 1% chance of progressing in."

Here is how Napoli line up. That front three is full of pace, hard to see them not scoring this evening.

Real Madrid are also in action and will hope to find a way past the dangerous Napoli and into the last eight. Zidane's men already have a 3-1 advantage from the first leg.

Here is how they line up.

Food for thought ahead of the imminent team news.

How are Arsenal's chances looking ahead of tonight? Not great, according to Wenger..

"What you expect is that you go out there with a mixture of lucid rage. Total commitment, but not a silly one," the Frenchman was quoted as saying by ESPN.

"Look we missed 45 minutes at Bayern Munich and we have an opportunity to put it right. Let's not fool ourselves, we have a one or two-percent chance. But you never know.

"That's why we have to focus on the quality of our performance and our commitment.

"We finished top of the group, PSG finished second and they beat Barcelona 4-0. Why? Because Barcelona missed the game completely. We have to give our best."

Arsenal are facing an uphill battle, made even steeper by the absence of Mesut Ozil, who is out with the flu. The German is in training but is not fit enough in Wenger's eyes to feature against Bayern.

If that wasn't bad enough Gunners talisman Alexis Sanchez may also be absent from the starting line-up. The Chilean was dropped by Wenger after a training ground bust-up and the Arsenal may see fit to punish the forward again.

"He [Ozil] is not in the squad, he had just one training session yesterday," Wenger told a press conference on Monday. "I don't think he is ready for the squad. He should be ok for the weekend."

Wenger's decision to drop Sanchez was roundly questioned ahead of kick-off on Saturday and even more so after the final whistle given the forward's second-half contribution. But when asked if Sanchez will be back against Bayern, Wenger said: "I haven't decided yet. We will see, I think I will make a decision tomorrow morning."

Good evening and welcome to IB Times UK's live coverage of Arsenal vs Bayern Munich.

The Gunners are all but out of the Champions League already after losing 5-1 to Bayern in the first leg at the Allianz Arena and are not in great shape ahead of tonight's clash at The Emirates Stadium, with protests against Arsene Wenger planned at some point tonight.

Can Arsenal pull off a major surprise? Probably not, but stick with us for the latest updates anyway. Our man Nick Howson is at the game tonight and will be giving his reaction to proceedings as and when.