Former Chelsea goalkeeper Mark Bosnich believes Diego Costa will leave in January.

Costa was dropped for the draw at Tottenham.

Bosnich told talkSPORT of Costa's bib antics: "Generally when you are with a manager and you do that type of thing, it is the beginning of the end.

"Not going out for the warm-up, I can understand that completely, but throwing the bib at the manager during the game points to one way.

"They probably won't do it immediately but I really do think it is the beginning of the end, which is really unfortunate because he has been a smash hit since he has been at Chelsea."