After his spell at Chelsea, the striker returned to the capital and in the three seasons at his second spell at the club, he has scored 12 goals. He has been booked 20 times and been sent off twice.
Those are poor stats since he returned to Atletico Madrid. His best stats were in the 2013-14 season when he scored 36 goals and gave three assists in 52 matches. That is when he caught Chelsea's eye.
Up to now, the fact he is not at his best is affecting the team's play in general. They have drawn two and lost one of their last three matches, something which does not coincide with their objectives at the start of the season.
It is hoped Costa returns to top form as soon as possible because he can helps his team greatly when it comes to scoring goals. His last important intervention was an assist back in matchday three against Eibar.