Chelsea are moments away from another FA Cup quarter-final. Olivier Giroud gets a little rest as Reece James comes on.

They might be losing but West Brom are still ploughing away and hit the bar through Kyle Edwards' deflected attempt.

Billy Gilmour, take a bow. Brilliant feet from the youngster to step away from two tackles and then play a lovely ball through.

Must be getting a Scotland cap soon.

Shelvey is finally on the pitch!

He's replaced Miguel Almiron. I'd be a little bit annoyed if I was Almiron. You're running the show, on a hat-trick...and then find yourself hooked!

Jermaine Jenas
Ex-Tottenham and Newcastle midfielder on BBC One

I'm really surprised a player like Mason Mount has not seen that. To not spot Giroud six yards out for a tap-in is very strange.

Pass it, pass it, pass it, pass it, PASS IT!

Ah great finish.

Cross it! Mason Mount is in down the left channel and should pull it back for Olivier Giroud - instead he shoots wildly over.

Dion Dublin
Former Aston Villa BBC Radio 5 Live

I don't get it. I don't get why you're not ready when you're told you are going on. He still hasn't got his boots on.

Fair to say Dion Dublin is unimpressed with the amount of time it is taking Jonjo Shelvey to come on.

Jermaine Jenas
Ex-Tottenham and Newcastle midfielder on BBC One

Billy Gilmour has looked like he is having a kickabout in the park with his mates. That is the biggest compliment I can give him.

Dave McGoldrick heads over for Sheffield United. Chris Wilder won't fancy extra time...

Liam, Dronfield: Liverpool have a major issue with having no creativity in their midfield and finally it's starting to show. Ox and Lallana never filled Coutinho's boots and Minamino has looked disappointing.

Rob: That's the treble safe for another year.

Boos as Mo Salah comes on against his former club. Not exactly his fault he didn't do much for Chelsea...

Mo Salah is about to come on for Liverpool, who would probably do without the winter break if they had the chance to rewrite that one.

12 minutes left.

Not every finish can be a world beater. Great ball out wide though.

That's it for Gareth Barry. The 39-year-old West Brom midfielder makes way for Filip Krovinovic and the substitute almost makes an immediate impact with a dipping attempt which goes ever so close to beating Karl Darlow.

Keith Edwards
Ex-Sheffield United striker on BBC Radio Sheffield

For me, Sheffield United should be looking to play people in on the edge of the box, but they keep coming back on themselves.

Lys Mousset hasn't had the best of service, but he hasn't held the ball up as well has David McGoldrick.

Jermaine Jenas
Ex-Tottenham and Newcastle midfielder on BBC One

What a save this is from Adrian. Giroud thinks that's in the net but Adrian gets his fingers to it.

He's had some mixed moments tonight but he's made some top saves.

The last train back from London to Liverpool has just left by the way. Handy that.

James Milner is as late as your average commuter service to chop down Pedro and go in the book.

WHAT a save! Adrian has just about kept this tie alive, maybe. Olivier Giroud is hit over the top, he chests it down, gets it on to his left foot and fires in a shot from the penalty spot.

Adrian gets a finger on it, it whacks off the crossbar and comes out.