We're into the final five minutes at Elland Road and Millwall are looking comfortable as a place in the fifth-round draw awaits.

Leeds, who sit top of the Championship, have been largely second-best to 14th-placed Millwall.

Chris Sutton
Former England striker on BBC Radio 5 Live

Image source, Reuters

That is the beauty of the Manchester City bench. They are able to bring on the likes of Kevin de Bruyne and Phil Foden.

De Bruyne stretches just to poke it in past Josh Keeley. City are in front and they have been really dominant in the second half.

Martin Keown
Former England defender on BBC One

We talked about football royalty when he came on and look at that movement from deep from De Bruyne. The keeper hesitated and he punished him as he has done so many times in his career. That deft little touch has maybe put this tie to bed.

Martin Keown
Former England defender on BBC One

I wonder if VAR might have looked at that foul from Cooper, because it's right down his calf.

That's poor!

Brandon Cooper gets his timing all wrong as he goes in behind on Omar Marmoush.

That might have been a red card with VAR. The Leyton Orient gets away with a yellow on this occasion.

Charlie Kelman!

He's being tracked by a couple of City players but still manages to get his shot away from just inside the box.

Good save by Stefan Ortega.

Chris Sutton
Former England striker on BBC Radio 5 Live

Image source, PA Media

Poor old Leyton Orient! They have worked so hard in this second half dealing with Manchester City attacks and then they see Phil Foden and Kevin de Bruyne coming on.

With Real Madrid due in town in three days, Manchester City do not want extra time.

Fifteen minutes plus stoppages.

They might be running out of steam but Leyton Orient are still playing with belief and confidence. Charlie Kelman continues to pose problems with his pace and creativity.

Manchester City have sent on the cavalry.

Nico O'Reilly and James McAtee make way for Kevin de Bruyne and Phil Foden.

Click above to watch how Manchester City got back on level terms.

Chris Sutton
Former England striker on BBC Radio 5 Live

As expected, Leyton Orient haven't had much of the ball in this second half, but they need to try and keep it a little more. Because it's been wave after wave after wave of Manchester City attacks.

This has been a monumental effort by the League One club.

But they're beginning to tire and City are getting ready to send on Kevin de Bruyne and Phil Foden.

They want to get this over with in normal time.

We've got about 20 minutes plus stoppages.

A reminder that if it stays 1-1 after 90 minutes, we're going to have extra time.

Martin Keown
Former England defender on BBC One

Image source, Getty Images

That is a top save from Keeley, a really quality save because he sees that late. It takes a deflection through a sea of bodies and he still makes the save.

Another great save by Josh Keeley - who is having the game of his life - to deny Ilkay Gundogan after he lets fly from outside the box.

It takes a deflection but Keeley does ever so well to get down and keep it out.

Femi Azeez is causing Leeds all sorts of problems down the left and he's just put in a fantastic low cross into the box as Millwall go in search of a third but it's well cut out by the Leeds defence.

This is on a knife edge - end to end and it's being played at a rip-roaring pace. James McAtee goes close with a first time attempt which hits the post before dropping wide. It came after a City player went down in the box after a challenge. Pep Guardiola wants a penalty but play goes on.