Chelsea are still searching for more players this transfer window.
The Blues are yet to make an official bid for Sevilla defender Jules Kounde after Zouma’s expected departure to West Ham takes place.
They made a club-record £97.5m move to sign Inter striker Romelu Lukaku to bolster their attacking options.
But Thomas Tuchel hasn’t ruled out any further signings this summer.
Tuchel said: “Well we are hoping; we still have some ideas and we are trying.
“And not all decisions are taken regarding also to our squad. So there are some negotiations going on and we are aware of all the situations.
“Hoping as in meaning that we need something to make the coach happy or to be competitive? Absolutely not.
“Because I’m happy with the squad as it is, and I have a lot of confidence we are absolutely competitive on a high level.
“But still all eyes are open, and we are aware of all situations and you never know in football.
“But in the moment we are focused on the game tomorrow (Saturday) and there are not many days left to take big decisions, so it’s all good so far.”