Chelsea boss Thomas Tuchel is unsure if Edouard Mendy can make the weekend clash with Manchester City.
Mendy will miss Chelsea's Carabao Cup tie against Aston Villa tomorrow and faces a race against time to be fit for Saturday's lunchtime showdown with Manchester City.
Goalkeeper Mendy missed Chelsea's 3-0 win at Tottenham due to a hip injury suffered late on in their 1-0 Champions League victory against FC Zenit last week with Kepa Arrizabalaga filling in.
Tuchel said, "We will try to do everything for Saturday and to reintegrate him tomorrow in individual training and hopefully in Thursday's team training but not yet.
"It's a matter of the amount of pain and the loads that we have for the players and there was quite some intensive games.
"I think it's possible [he could play against City] but it's a race against pain and a race against time so let's see.