England international Chilwell also missed Chelsea's 2-2 home draw against lowly Burnley on Saturday due to a leg injury after returning from international duty, while Frenchman Gusto was replaced by Alfie Gilchrist in the 87th minute.

Trevoh Chalobah, Carney Chukwuemeka and goalkeeper Robert Sanchez are back in team training. Levi Colwill, Wesley Fofana, Reece James, Romeo Lavia, Christopher Nkunku and Lesley Ugochukwu are continuing their rehabilitation programmes.

"Trevoh and Malo have trained with us and they are ready to be in the squad. Ben, no. We didn't see him from Friday. That was the last time we saw him. The medical staff have removed a lot of fluid from his knee," Pochettino told reporters.

"That was the situation after he arrived from the national team. Then on Saturday he got ill, and today he's not here he's at home trying to recover.

"Robert is training. We will see if he is coming on the list or not."

Pochettino added that Nkunku's recovery is taking longer than expected. The versatile 26-year-old France forward has made only seven Premier League appearances since his 60 million pounds close-season move from RB Leipzig.

Chelsea, 12th in the standings with 40 points and 10 games remaining, on Thursday host sixth-placed United, who beat them 2-1 at Old Trafford in December.

Pochettino added that his young side needed to improve quickly and defend their badge.

"We are Chelsea, but we need to behave like Chelsea, we need to behave like we want to belong to a big club," the Argentine said. "It's not an excuse to be a young or inexperienced player.

"We need to perform ... There is not time to improve in one year or two years because the demand is so high from the Premier League and from the club.

"They need to say we are here, we have character and show we deserve to be playing at this amazing club. The fans will get behind us if we do that."