Thomas Tuchel has admitted Antonio Rudiger's impending departure and the uncertainty around other players' futures is damaging the Chelsea dressing room.
Rudiger, who has been a key player for the Blues, will leave Stamford Bridge when his contract expires at the end of the season.
Chelsea were unable to negotiate a new deal for the centre back due to the current sanctions imposed on the club.
Those restrictions are also preventing the Blues from negotiating with other players who are coming to the end of their contracts.