And that looks painful too, Rhian Brewster chases a lost cause and clatters straight through the advertising screens. They used to be a bit of plastic but they're all TV screens nowadays and he hit them at real pace.

Caglar Soyuncu takes a real chance as the last man for Leicester in the centre-circle, sidestepping Percy Tau and nearly losing it. He just about gets away with it but he's now limping and holding his left hamstring. I'll keep an eye on that.

First sign of life from Jamie Vardy, found in space 30 yards from goal and he immediately shoots hard and low but it deflects up and over for a corner.

Good spell of pressure from the Championship visitors but they rather waste a free-kick midway through the Sheffield United half by playing it short and the chance has gone.

Brighton win a corner and Leicester make a real meal of clearing at the far post, youngster Vontae Daley-Campbell eventually is able to get it clear.

Been a sleepy start in the east midlands.

....and then straight down the other end Sheffield United should score! Left wing-back Max Lowe takes a brilliant touch to beat the last man, and then as keeper Max O'Leary comes out he sidefoots past him - but onto the crossbar and away!

First real moment of danger as a Bristol City free-kick is not cleared and smashed back in by Tomas Kalas, Aaron Ramsdale is down to his left to push it away...

The Bristol City keeper shirt is wild by the way. Will bring you a pic when I can.

It had been all Leicester but Brighton threaten to break out - a better pass would have sent Andi Zeqiri in on goal.

Jonathan R: Great to hear Jonathan Pearce waxing lyrically about the great Tony Currie.

DJ: Hoping Brewster scores tonight. I reckon even if we [Sheffield United] go down, he will score big in the championship. Just needs that one goal.

Jayden Bogle powers down the Blades' right but he can't find a cross with Billy Sharp lurking in the middle.

Apparently it's -3C at kick-off at the King Power and the commentator on Sports Extra is wearing a sleeping bag. I have never seen that in all my years in press boxes I must say.

Impressive.

And a few minutes late, we are off in Sheffield too.

We're off in Leicester.

Everton manager Carlo Ancelotti makes three changes to the side that drew 3-3 at Manchester United in the Premier League on Saturday.

Yerry Mina, Gylfi Sigurdsson and Alex Iwobi start as Mason Holgate drops to the bench and James Rodriguez and Andre Gomes miss out altogether.

Everton XI: Olsen, Godfrey, Keane, Mina, Digne, Doucoure, Davies, Sigurdsson, Iwobi, Calvert-Lewin, Richarlison.

Subs: Virginia, Tyrer, Holgate, Nkounkou, Bernard, Coleman, Onyango

Image source, @Everton

Tottenham manager Jose Mourinho makes two changes to the side that started Sunday's Premier League win over West Brom.

Serge Aurier, who has been struggling with a calf strain, misses out and Harry Kane drops to the bench. So Steven Bergwijn and Matt Doherty both start.

Tottenham XI: Lloris Doherty, Alderweireld, Sanchez, Davies, Hojbjerg, Ndombele, Lamela, Bergwijn, Moura, Son

Subs: Hart, Dier, Rodon, Tanganga, Winks, Sissoko, Alli, Kane, Vinicius

The sides emerge for our two 19:30 GMT kick-offs. Who will end up in the last eight tonight?

As consolation goals go - this is pretty decent.

Changes have been made but everyone is naming pretty strong sides this evening I must say. I was expecting Jamie Vardy to get the night off but he leads the Leicester line.

Mark Lawrenson
BBC football expert

Image source, Reuters

Brighton are on an excellent run but they still need a couple more wins to get totally safe, while Leicester have got a really good chance of finishing in the top four.

So, I suspect both sides will make a few changes, but it should still be a lot closer than when Leicester beat the Seagulls 3-0 at King Power Stadium before Christmas.

Prediction: 1-0