Antonio Rudiger was ejected from Chelsea training after a fight that involved pushing and shoving team-mate Kepa Arrizabalaga on Sunday.
According to reports from The Telegraph via Sky Sports, tempers have flared at Chelsea since their shock 5-2 home defeat to premier league bottom-leaguers West Brom.
Rudiger who was sent to the changing rooms after a late tackle on Kepa, later apologized to his teammate.
Both players were left on the bench during Saturday’s defeat, which handed Tottenham and Liverpool a chance to cut the gap to two points, while West Ham will have the opportunity to leapfrog the Blues in fourth when they face Wolves on Monday.
Blues boss Thomas Tuchel had warned his players not to lose their heads after the game.
“We cannot lose our heads now and take away the trust we have in these players,” Tuchel said. “It was the moment after the game to be honest, be calm and to tell everybody to breathe.
“This will be a hard evening for everybody. We had completely different plans how to start this match day so we have to accept it now, it’s our first loss together. It’s important to find a way to deal with it together.”
Meanwhile, Chelsea face Porto in the Champions League last eight on Wednesday at the Ramon Sanchez Pizjuan stadium in Seville – a neutral venue that was selected due to the coronavirus travel restrictions.