At Chelsea’s training session, defender Antonio Rüdiger and goalkeeper Kepa Arrizabalaga engaged in a clash, claim The Guardian.
The German was sent off early on a game episode, after a clash with the Spaniard. The players began to shove each other and were pulled apart by their teammates.
Later, Rüdiger apologised to both Kepa and Blues head coach Thomas Tuchel.
Chelsea lost heavily to West Bromwich (2-5) at home, suffering their first defeat under Tuchel on Saturday.
Rüdiger and Kepa were on the bench at that game.