Hello and welcome to LIVE commentary of the mouthwatering FA Cup quarter-final clash between Chelsea and Manchester United at Stamford Bridge. Will John Terry play? Who will Jose Mourinho start with up front? Kick-off is at 19:45 GMT.

Valencia snaps at the heels of Alonso, that could have been a yellow. The visitors are trying to disrupt Chelsea by pressing them in their half.

United have shown plenty of aggression in the early stages and have been first to the 50:50 balls. No chances created yet though.

Costa is penalised for barging over Herrera, a minute after the Chelsea striker was on the receiving end of a crunching challenge from Rojo. It looks to be a busy night for Michael Oliver.

The last two Cup games between these sides have gone to a replay. That cannot happen tonight under the new rules, so it's extra time and penalties.

There was a frosty handshake before the game between Mourinho and Conte following their disagreement in the league game in October.

CHANCE! Alonso gets in ahead of Herrera and puts the ball behind for a corner. The delivery from Mkhitaryan is a good one and finds an unbalanced Rojo but his header is way off target.

KICK-OFF: Chelsea, who go with their tried and tested 3-4-3, get the game underway with Costa.

Five minutes till kick-off!

Conte is diplomatic as ever in assessing his side's chances: "In October, before the game I was sure of facing a great team. It's the same now. Manchester United have together with [Manchester] City the best squad in the league. We have a good identity. We are showing good football but for sure it will be a really tough game."

Mourinho, without Zlatan, Martial and Rooney, on his team with a lot of references to under-23 team coach Nicky Butt: "We cannot go with Nicky Butt's team. Manchester United is too big. Manchester United is the winner of the competition. It is not Chelsea's fault that we were given this Monday match, so we have to make changes for sure."

Chelsea have won two out of the three FA Cup sixth round ties between the teams, the most recent of which was in 2013 after a goal from Demba Ba.

There has been plenty of mind games in the build-up from Mourinho about Chelsea's style of play..

Conte has a full team to choose from and goes with a strong team, Willian and Matic are in. Terry, Fabregas, and Pedro are on the bench.

It's a return to the Bridge for Mourinho, who will be hoping to avoid a repeat of the 4-0 victory for the Blues over United in October which led to the unsavoury scenes between the Portuguese coach and Antonio Conte after the final whistle.

The big team news is Rashford has recovered from illness and is fit to start with Mkhitaryan playing behind him. Fellaini is on the bench.