Paul Pogba lashes a shot at Vorm who dives to his left to save.

Confidence flowing through the Frenchman now.

Christian Eriksen tries his luck from about 20 yards, it's close but De Gea watches it go past his post.

Spurs look shell-shocked.

Lukaku goes on another run and gets his shot off but Vorm saves easily.

Phil McNulty
BBC Sport chief football writer at Wembley

Mauricio Pochettino's head was in his hands as Ander Herrera's shot hit the back of the net. He and his Spurs team have been here before.

They have had plenty of the ball in this second half but it is Manchester United who have made the vital breakthrough.

Jose Mourinho's side showed great resilience to survive the early Spurs assault but they have plenty of that, as they demonstrated by coming from two goals down to win away at Crystal Palace and Manchester City recently.

The two halves of Wembley show supporters in contrasting moods now.

Mousa Dembele puts his arm across Alexis Sanchez to pull back the Chilean and Paul Pogba is incensed.

Anthony Taylor puts his finger to his ear, but VAR is not called on.

Danny Murphy
Former England midfielder on BBC One

Ander Herrera gets a good firm strike behind it and United lead. Since the equaliser in the first-half he has been terrific. He has been filling in, spotting danger, been tidy with his play and now he has contributed with that goal.

Ed: Vorm’s positioning for that goal was awful

Joseph: Herrera scores. Reward for United, Spurs haven't looked like they want to win this game so far in the 2nd half.

Luke: Business end of the season and Spurs reverting to their usual bottling heritage.

Image source, AFP

Ben Davies is replaced by the more attacking Lucas Moura.

Spurs have to go for it now.

Paul Pogba picks out Romelu Lukaku, the Belgium is all on his own so has a go himself and shoots just wide.

Spurs on the back foot.

James: United need to shut Eriksen down, they’re not going to keep getting away with giving him this much time and space

Aaron: Pogba needs to go forward more often, he is a playmaker not a defensive midfielder. His best football is in the final third.

Christian Eriksen gets a free run to the byline and clips a pass back across goal but no one is there.

Alli then plays in Kane, who takes a touch and shoots but Smalling deflects it out for a corner.

Alexis Sanchez is pulling the strings for United. He tries to chip one into the path of Lingard in the box but Jan Vertonghen is stronger and knocks the midfielder off the ball.

Few shouts for a penalty but we move on and VAR stays in its box for now.

Image source, Reuters

Dele Alli stumbles into Jesse Lingard and gets booked.

A much slower start to the second-half.

Referee Anthony Taylor gets us back under way.

Teams on the way back out at Wembley. A big 45 minutes and maybe more ahead of us.

BBC Sport looks back at five goals from FA Cup matches between Manchester United and Tottenham...