Chelsea boss Antonio Conte is wary of rushing Danny Drinkwater's first team introduction.
The former Leicester City midfielder is yet to see action for Chelsea due to injury problems.
Conte said today: "Danny is progressing well, now he has started to work, not with us but he has started to work in a part of the session with us. Now it is important for him to progress well, to improve his physical condition, he is progressing well.
"It is important to recover him well, if I try to put him on the pitch without good fitness it is a risk to have another injury.
"Maybe after 34-35 days we must have patience and wait for the right moment. He is frustrated because he wants to play."