Former Chelsea goalkeeper Rob Green says the club's manager Graham Potter faces an "unmanageable situation" with his inflated squad.
The Blues have spent 583m on new players in the past two transfer windows under owner Todd Boehly, with eight new signings arriving in January.
Chelsea have won two of their last 14 games and Green says the fans are starting to turn on Potter.
"With the amount of players there, it's an unmanageable situation," said Green.
Speaking on BBC Radio 5 Live's Monday Night Club, Green added: "Once the crowd turns, it starts to get ugly and the players get affected and go into their shells.
"You can already see it from the players, from an attacking perspective and then it gets harder."