Full-time: Blackburn 1-2 Manchester United
United book their place in the FA Cup quarter-finals.
Blackburn can't work anything from a corner and that gives United the ball back. They might not lose it again until the final whistle blows...
Four minutes of time added on. Blackburn are still on the hunt for an equaliser here.
Blackburn have the ball in the net, but it won't count! Mahoney does brilliantly once again, gliding past three challenges before letting fly with a shot. Romero stops it, but he spills it right in front of Emnes. The Dutchman blasts it on goal but the United goalkeeper recovers brilliantly to keep his out his effort. The rebound falls to Stokes who sticks it home, but the Republic of Ireland international is well offside. Huge scare for United.
Mahoney brilliantly shimmies past Pogba out on the left flank but is crudely brought down by the Frenchman, who immediately sprints away from the incident. Will that see him escape a yellow card? It looks to have worked; the free kick is taken with no cards shown.
Anthony Stokes has come on to try and help Blackburn rescue something. They've got 10 minutes to do it.
Ibrahimovic does it again! The two subs combine with Pogba acting as the quarter-back, flinging a superb pass over for the Swede who has the time to let the ball drop, measure his angles and guide it into the far corner.
Goal! Blackburn 1-2 Manchester United (Henrikh Mkhitaryan, 75)
Conor Mahoney, just off the bench, gets his first chance to run at Darmian and wins a corner kick for his side. Blackburn end up bundling the ball into the back of the net from it but the whistle had been blown for a foul well before that.
Conway threatens to lead another counter down the left but Young sticks out a leg and brings him down. Those two have had a good battle down that flank today.
Mkhitaryan finds Ibrahimovic in the box with another outstanding pass. The big Swede takes it on his chest, but his volley connects with nothing but fresh air; a big swing and a miss.
Michael Carrick's long-rang passing has been superb in this half. He is picking out Rashford's clever runs down the left every single time. If United are to find a second, you feel those two will be involved.
Rashford, who have moved out onto the left, gets the ball and drives at Lowe cutting in from the wing. Lowe does well however and forces the corner.
Ibrahimovic is inches from scoring with his first touch! Pogba is involved too, finding Herrera who drives an inviting ball across goal but the big Swede can't quite stretch far enough to tap it home.
And here they come; Ibrahimovic and Pogba enter the fray with Lingard and Martial the ones to make way.
Lingard is played in by Martial but loses his footing and another attack breaks down. United need to freshen things up a bit, they've slipped down a gear over the last five minutes.
Here come the big guns. Both Zlatan Ibrahimovic and Paul Pogba are changing out of their training gear.
Brilliant from Rashford. He skips past three challenges as he dances his way into the box, but is denied the space to work the shot. He instead tries to slide a ball through for the onrushing Young but Blackburn get their first and clear.
Martial and Mkhitaryan try to slice their way through Blackburn with neat one-twos but Feeney does well to get the ball off the Frenchman. Not only does he stop the attack, he drives forward to force a counter attack that is stopped illegally by Lingard, who is booked.
Martial tries to spray the ball wide to Young but Mulgrew sticks out an arm to block it. United free kick.
Here we go, time for the second half.
Half-time: Blackburn 1-1 Manchester United
What a chance for Lingard! Carrick switches play beautifully to find Young, who has time and space to whip a precise cross in. Lingard meets it, nodding across goal looking for the far corner, but his effort veers wide. Should have done better.
Three minutes added to a first-half that has flown by.