Gallas, 31, stunned everyone at the club by revealing problems in the Arsenal dressing room.
He claimed he had to break up a fight between Robin van Persie and Theo Walcott at half-time during the explosive 4-4 draw with Spurs last month.
The defender also claimed there was a rat in the Emirates camp who everyone dislikes, thought to be Emmanuel Eboue, saysThe Sun.
Our source, who asked not to be named, added: “William’s had big fall-outs with Nicklas Bendtner in the past and most recently he’s had a problem with Eboue.
“He doesn’t mix with anyone in the club any more and is a bit of a loner.
“He has no friends in the dressing room and feels his authority has been undermined.
“But the other Arsenal players seem to have short memories.
“After all, one of the first things he did as captain was negotiate a better deal for the players’ win bonuses.
“Under him, they went from earning a win bonus of £800 per game to £2,500.
“That made him everyone’s friend at first. Now he has no friends.”
One player said: “We were called into a team meeting and told William was not going to be captain for the match at City.
“We are all very angry with William. But we were told we have to move on and forget about the captaincy.
“But at the moment, there are a lot of problems at Arsenal.”