Chelsea boss Graham Potter admits they need a fully fit N'Golo Kante.
The midfielder returned to training yesterday after several weeks out injured.
Potter said, "As I said it is hard to replace someone like him. Any team that loses him will suffer a little bit. But it is for the other players to step up... If I look at the options I have got, although we don't have a direct replacement, I [have to look into it]."
On Pierre-Emerick Aubameyang, he also said at today's Champions League presser: "We're here to support but I think the best thing for him is to play football, to put the incident behind him as quickly as possible. I think he feels that here. He has acted really professionally, I have been really impressed with him.
"He wouldn't be human if it [the burglary this summer] didn't [affected him], it wouldn't be human if he didn't. But I can only act on how he behaves and he has been perfect. At the same time you are talking about something that isn't particularly nice when fans are included."