Chelsea boss Thomas Tuchel admits he misses former technical adviser Petr Cech.
The Blues legend was pushed out by the club's new board this summer.
Tuchel said today: "We miss him a lot. We saw him in the last few days and he knows we miss him a lot.
"He was here daily in the training centre. He was the person who lifted the attitude and understood what it meant to be a Chelsea player. He gave me enormous support that maybe I never had before with his honesty.
"It was a fantastic relationship but we have to respect his decision. Everything is new, the line of communication is new and everybody needs to step up now."
Tuchel also spoke of Raheem Sterling's best position ahead of Sunday's clash with Tottenham.
He said: "I think he should play on the last line or between the defensive lines to drive towards the last line. He was very good in training in this free role as a number nine and dropping into half spaces.
"It's such a lot of quality that there are many spaces to use for him. He is very dangerous. He came late on our pre-season and things are not finished, but one thing is clear, the kind of impact he has mentally and physically is huge, no matter where he plays."