Full-time: Manchester United 1-1 Arsenal
- Two substitutes combine to rescue a point for lacklustre Gunners at Old Trafford
- Arsenal had failed to register a single shot on target before Olivier Giroud emphatically headed home Alex Oxlade-Chamberlain's right-wing cross in the 89th minute
- Jose Mourinho's side had earlier taken a second-half lead when Ander Herrera teed up compatriot Juan Mata for a lovely side-footed finish
- The hosts were denied a penalty before the break when Nacho Monreal appeared to drag down Antonio Valencia
- Matteo Darmian was fortunate to avoid being sent off for a string of first-half fouls
- Wayne Rooney appeared as a substitute following a torrid week in which he was forced to apologise for 'inappropriate images' that appeared in the press following a wedding at England's team hotel
- Arsenal, who could have gone top of the table with a win, have still not suffered defeat in any competition since the opening weekend of the season and temporarily leapfrog Tottenham Hotspur into third
- Inconsistent United, much the better team on the day, remain six points adrift in sixth
- Arsene Wenger has still yet to record a single competitive victory over bitter foe Mourinho in 14 meetings
- Later: Southampton vs Liverpool, Tottenham vs West Ham
That just about wraps up this live blog, but be sure to join my IBTimes UK sport colleague Tony Mogan for updates from this afternoon's five-strong 15.00 GMT slate including Southampton's meeting with table-toppers Liverpool at St Mary's. Yaya Toure is also set to make his first Premier League start since April as Manchester City travel to Crystal Palace.
I will be back later this afternoon to provide further live coverage of the London derby contest between Tottenham and West Ham. Coverage of that 17.30 kick-off from 16.00.
Until then, goodbye.
Arsenal entertain reigning French champions Paris Saint-Germain in a potentially pivotal Champions League clash on Wednesday that will likely go a long way to determining who wins Group A. Their next top-flight outing comes against Bournemouth in eight days time.
United, meanwhile, host Feyenoord in the Europa League on Thursday before back-to-back clashes against West Ham.
Both of these teams are in EFL Cup quarter-final action next week.
So that late Giroud header salvages a point for Arsenal, still unbeaten since the opening weekend of the season, on a day where Wenger clearly got his team selection wrong.
The Gunners temporarily jump above rivals Tottenham into third. United were much the better side for the most part, but remain six points behind in sixth.
Manchester United 1-1 Arsenal
Marriner decides not to penalise Monreal following a coming together with Herrera and Rooney is then booked for dissent.
Rooney is whistled for an obvious handball in the box and Cech comes out to claim a free-kick. The offside flag was up anyway.
Four minutes of added time signalled. Can either of these two sides find a winner at the death?
It's been a lethargic and lacklustre attacking display from Arsenal, but they pull level late on as two of Wenger's substitutes combine to devastating effect.
Oxlade-Chamberlain breezes past Rashford down the right and stands up a perfect cross to the back post. With Jones occupied by Koscielny and Valencia merely a spectator, Giroud rises unchallenged to power home an unstoppable header past the helpless De Gea.
Goal: Manchester United 1-1 Arsenal (Olivier Giroud)
Arsenal are controlling possession just at the moment but are desperately struggling to create an opening.
Ramsey commits another foul on Pogba and is promptly shown a yellow card.
Alex Oxlade-Chamberlain for Jenkinson is Arsenal's final change.
Potential match-winner Mata also receives a standing ovation as he walks off. Morgan Schneiderlin comes on in his place.
Wenger's second substitution sees Coquelin replaced by Xhaka. Arsenal's midfield pairing has certainly been found wanting today.
10 minutes plus stoppage time for the Gunners, who have still yet to register a shot on target during a wretched second-half showing, to find an equaliser at Old Trafford.
Still United apply the pressure and Ramsey is penalised for a foul on Pogba.
Blind then sends in a cross for Rojo, who rises above Jenkinson and heads wide.
Wenger responds to going behind by throwing on Olivier Giroud. Elneny is the man to make way.
United have been really turning the screw in the last few minutes and they get their reward.
After a throw-in on the right, Pogba gets the better of Monreal and releases Herrera.
His run to the byline is not checked by Monreal and the midfielder produces an accurate cutback that compatriot Mata, arriving unmarked from the edge of the penalty area, dispatches first time into the back of the net with a brilliant side-footed finish.
He is then tediously cautioned for passionately celebrating with his own fans.
Goal: Manchester United 1-0 Arsenal (Juan Mata)
"If Rooney scores, we're on the pitch" sing a section of the home support. It is worth remembering throughout all the recent criticism that the skipper is just two goals away from equalling Sir Bobby Charlton (249) as United's all-time record scorer.
What a time this would be to get them.
With 63 minutes gone, Mourinho sends on Rooney in place of Martial. It's been another frustratingly quiet afternoon for the Frenchman. Rashford will now move out to the left.
Daley Blind also comes on for Darmian, who is one transgression away from a second yellow card and may also have picked up a knock.
United work the ball well to Valencia on the right-hand side. He finds Herrera, whose cross is wildly overhit. Martial does well to keep it in play before being tackled by Jenkinson.
Elneny then clears another delivery.
Can this man come on and break the deadlock? It would be some riposte to his army of critics after another week of headlines...
Static goalkeeping from David De Gea as he stays rooted to the spot and relies on Jones to deal with Laurent Koscielny's attempted close-range header.
Arsenal's second corner in quick succession is overhit and fails to cause any problems.