Antonio Rudiger and Kepa Arrizabalaga were involved in a training ground confrontation, Thomas Tuchel has confirmed.
He has been usurped as Chelsea's first-choice goalkeeper by Edouard Mendy, but Thomas Tuchel has not written off Kepa Arrizabalaga.
Kepa Arrizabalaga made an error and Timo Werner missed a penalty in a 3-1 win over Luton Town, but Frank Lampard backed both players.
Tammy Abraham's hat-trick against Luton Town sent Chelsea into the fifth round of the FA Cup to lift some of the pressure on Frank Lampard.
Edouard Mendy will be rested when Chelsea face Krasnodar in the Champions League, giving Kepa Arrizabalaga a chance to return.
Manchester City are reportedly eyeing a move for Lionel Messi in the New Year.
Chelsea will again be without Christian Pulisic when they face Sheffield United on Saturday due to a hamstring injury.
Kepa Arrizabalaga was backed by Chelsea captain Cesar Azpilicueta.
After Frank Lampard suggested poor goalkeeping was the main cause of Chelsea's poor defensive record, we look at the Opta data.
Chelsea had an early grip on Saturday's Premier League clash with Southampton but were punished for sloppy defending and blatant mistakes.