Sunday's Chelsea training ground clash between Toni Rudiger and Kepa Arrizabalaga was carried on from Saturday's thrashing by West Brom.
Both Arrizabalaga and Rudiger were left to watch the team's capitulation from the bench, but it is reported that they were involved in a bit of needle on the sidelines.
The Athletic reports the substitute goalkeeper gave the German centre-back a few choice words while the game was going on.
The next day in training things boiled over after they both went for the same ball, with 'a lot of pushing and shoving' involved, the report claims.
A source claimed: "Rudiger showed Kepa who's boss."
After a shouting match, things reportedly turned physical and the two were involved in a physical scuffle.
Tuchel quickly intervened and sent Rudiger back into the dressing room early.
Arrizabalaga then followed him and the two apologised before hugging it out.
