Lampard praises Silva effect on Chelsea's defence

The Brazilian centre-back arrived at Stamford Bridge on a free transfer from Paris Saint-Germain in August as one of the pieces in an extensive summer rebuild.

"His influence has been huge," said Lampard, whose side host Sheffield United in the Premier League on Saturday. "Even without the language his professionalism has been very clear. That rubs off on players, they respect him.

"His performances have been very, very good. He manages himself, he trains well, he prepares well, it's very obvious from him and understandable why he's had the amazing career he's had so far."

Lampard said he enjoyed coaching a player with so much "intensity in wanting to perform at the highest level" even in the twilight of his career at age 36.

"We're managing him slightly, but when you look at his performances and how he trains, it's just been a real positive story so far," he added.

Spain goalkeeper Kepa Arrizabalaga is fit again for the Sheffield United match after recovering from shoulder trouble.

But Senegal international Edouard Mendy is expected to continue with the gloves after six clean-sheets in his past six games for the club.

Chelsea will be without Christian Pulisic, who is struggling with a hamstring problem. 

Kai Havertz missed Wednesday's 3-0 Champions League win over Rennes after testing positive for coronavirus and will also sit out the weekend's league match.

The Germany playmaker now faces a wait to discover whether he will be able to be involved in his country's upcoming fixtures.