Ooh! A dipping half-volley from Anass Zaroury tests Lynch, who dives to his right to push it behind the post.

Michael Emons
BBC Sport at Old Trafford

With West Ham first-choice goalkeeper Lukasz Fabianski set for a lengthy absence because of a fractured cheekbone and eye socket, stand-in keeper Alphonse Areola will be keen to impress.

And he's made a super start today. In only the sixth minute he got down superbly to his right to deny Marcel Sabitzer what would've been his first goal for Manchester United.

Then, six minutes later, Areola was again in top form to keep out Alejandro Garnacho's well-struck effort from the edge of the penalty area.

West Ham last won an FA Cup tie here in January 2001 when Paolo Di Canio took advantage of some attempted mind games from Fabien Barthez, who was appealing for an offside, when Di Canio slotted the ball past him.

If the Hammers are going to be in tonight's quarter-final draw they may well need more top saves from Areola.

Lucas Paqueta is fouled in the middle but it seemed play was waved on. Wout Weghorst picks it up and there's a three-on-one before the whistle eventually goes and it's brought back. West Ham thought they were in trouble for a moment.

Clinton Morrison
Former Republic of Ireland striker on BBC Radio 5 Live

Its been a good start for the home side, they have been positive and all these changes have not affected the start.

Not too much to shout about Old Trafford but Manchester United, fresh from their trophy win, have had the better chances.

It's given. Golden chance for the League Two club.

Vitinho is causing all kinds of problems for Fleetwood. They are struggling to handle him as he plays a quick one-two on the right and earns a corner, which Burnley don't capitalise on.

Image source, Getty Images

Referee Thomas Bramall is looking at the incident on the pitchside monitor. Boos ring out from the Southampton fans.

Martin Keown
Former England defender on BBC One

Richarlison was electric for Brazil in the World Cup. He has improved recently and kept Son Heung-min on the bench, so that will boost his confidence.

He is a wonderful talent but just needs that run in the team.

Oh hello!

Have Grimsby won a penalty? VAR is checking a handball against Lyanco. Play has been stopped and 4,000 Grimsby fans are holding their breath.

Alejandro Garnacho cuts in from the left and curls it towards the far corner. Alphonse Areola dives well to push it out but the rebound falls to Wout Weghorst who stabs it just wide. He's offside anyway but that was very close...

The rain is coming down in south Yorkshire. The floodlights are shining brightly and the home fans are in great voice. Proper cup upset conditions.

Vitinho spins away smartly from Danny Andrew and he's brought down outside the box. Vincent Kompany is fuming on the touchline but we all know he'd have done the same! Andrew gets a yellow for it.

Michail Antonio curls it in from the right after good play from West Ham in midfield but he's overcooked it.

The eighth and final tie of the fifth round is under way after a lovely tribute to John Motson. "There's only one John Motson," sing a packed Bramall Lane.

Burnley must have a goal coming soon. Fleetwood have done well so far but the pressure is mounting.

Vitinho fires one over the bar now.

Alejandro Garnacho has started well for Man Utd. He fizzes one in from the left but it flies inches wide of the far post.

Marcel Sabitzer then drives it towards the bottom corner from the edge of the box and it's a good save in the end.

Pat Nevin
Former Scotland winger on BBC Radio 5 Sports Extra

We all know whoever goes through tonight will look at the draw and think it is really open. It is not just a hope it is a real opportunity.

Chris Wilder
Former Sheffield United boss on BBC Radio 5 Live

This club has to get back into the Premier League which is the target. Only he (Paul Heckingbottom) knows who's fit and unfit. But from a players point of view they will all want to play live on the BBC in the FA cup.

Its a fantastic position the club is in. They came back against a decent Watford side and they will want to put a show on for the fans. The fans are a demanding fanbase and tonight they will want the players to have a right go at spurs.