The Blues have 31 players in their first-team squad after making six new additions last month.
Potter’s training sessions are being undermined due to having too many players to work with.
The Chelsea boss used to work rigorously on patterns of play and team shape in training at his former clubs.
However, it has proven difficult to replicate those sessions with 31 players.
Potter ran 11 vs 11 training matches at his former clubs to get the best out of his system and players.
He has had to change his coaching sessions since getting to Chelsea. As a result, not all the players are involved in his core training sessions.
That has affected their performances on the pitch, with just two wins in 15 games recorded.
The Blues boss has been unable to maintain continuity during training sessions.
Doing so during matches has also proven tricky, and he is under growing pressure.
Chelsea signed eight players last month, but Andrey Santos and Malo Gusto will join in the summer.
They tried to sell some of the fringe players during the January transfer window.
However, only Jorginho left, with the Italian midfielder joining league leaders Arsenal.
Pierre-Emerick Aubameyang was unable to leave despite the club’s best attempts to sell him.
Potter needs to start getting much-needed results with the fans already turning against him.
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