Sergio Aguero is coming off as Manchester City make another change as Manchester United momentum is disrupted. On comes Gabriel Jesus for the final few moments.

Dan James sends the ball towards the far post. He is looking for Harry Maguire but the delivery is poor and flies over Maguire's head.

Pep Guardiola is shutting up shop and bolsters his defence with the introduction of John Stones for Kevin de Bruyne.

The 90 minutes are up and there'll be four minutes of time added on.

Fred takes it... into the wall.

Relief around the Etihad.

Harry Maguire is brought down right on the edge of the area by Nicolas Otamendi.

Chance now for the visitors...

Nicolas Otamendi has some tidying up to do as Bernardo Silva plays a careless ball across the edge of his own area. That's what Manchester United need, a slip in concentration at the back for them to pounce on.

Dion Dublin
Former Man Utd striker on BBC Radio 5 Live

This is a close one. I think the linesman's just got that one right. His right leg is just off.

Lovely finish by Sergio Aguero... wait! The linesman's flag is up for offside.

The striker had just strayed off before flicking the ball into the far corner.

VAR has a check but the original decision to disallow the goal stands.

Kyle Walker and Nicolas Otamendi challenge for the same ball and Walker comes off much worse, taking a knock to the head. Actually, it doesn't appear too bad and after a minute to collect himself he can continue.

Into the final 10 minutes. Can Manchester United find that elusive second goal that would level the tie? They need to get the ball first...

Dion Dublin
Former Man Utd striker on BBC Radio 5 Live

This is a breathtaking game. It's being played at 100mph.

United have to come out and try to get that second goal.

Ilkay Gundogan lashes well over from the edge of the box as Manchester City continue to press.

Third and final change for Manchester United as Juan Mata comes on for Luke Shaw.

Manchester United are down to 10 men!

Midfielder and goalscorer Nemanja Matic brings down Ilkay Gundogan and is shown a second yellow card.

Is that the end of Manchester United's hopes of taking this to penalties?

Image source, Getty Images

Simon Stone
BBC Sport at the Etihad Stadium

Pep Guardiola was furious with David Silva just then.

I don't think he could believe the Manchester City midfielder failed to shoot when gifted that recent chance.

All very odd.

Steve Downes: Very clever tactics by Man City, trying to keep OGS in the job.

Pressure mounting as David Silva finds himself in the middle of the box but unselfishly passes to Ilkay Gundogan, who gets the ball trapped between his feet and he is eventually closed down.

City quickly regain possession but this time Sergio Aguero drives into the sidenetting.

It is a good job City don't need to score (as things stand) because the shooting boots have been very much left at home.

Dion Dublin
Former Man Utd striker on BBC Radio 5 Live

It was straight down De Gea's throat, luckily for United, because either side of him it was going in - it was struck that sweetly.

Manchester City win another corner - their eighth of the game - it is cleared to Kyle Walker on the edge of the box and the full-back's shot is fierce but straight at David de Gea.