The Spanish striker is known to have a temper and his past three years in England haven’t exactly claimed that.
The player was seen sulking for the majority of the summer after Antonio Conte explained to him that he was not in his plans for the season.
Costa then left for Brazil with the intention of staying out there and sulking until he got a move away from the club and to Atletico Madrid.
Eventually, the deal came off and the player was allowed to leave for his former side even though he is unable to play until the January transfer window.
That is down to the clubs transfer ban which means they will not be able to register the player until the winter window.
That means that the player must now get back up to fitness following no pre-season training at Chelsea as well as no games.
Though, the training regime he has been assigned has now gone well with the Spanish striker and there is some more trouble in paradise.
Diego Costa’s record for Atletico Madrid in all competitions:
Happy birthday. pic.twitter.com/K6BW510gLy
— Squawka Football (@Squawka) October 7, 2017
Diego Costa is becoming frustrated at the clubs plans to get him back up to fitness, by making him train away from the first-team squad.
The forward was seen attempting to train with the side before being told by a coach that he was not part of that session.
In fact, he was taken aside and told he would be training away from the group before kicking several balls away in frustration.
Costa then went and introduced himself to the youth side that were also training before being told he would be jogging on his own.
Safe to say, Costa was not best pleased and you can see that video here.