Diego Costa has signed for Chelsea in a £32 million move from Atletico Madrid.
Costa has penned a five-year contract at Stamford Bridge and will link up with his new team-mates when the Blues jet out for a European training camp next week.
Costa said: “I am very happy to sign for Chelsea.
“Everybody knows it is a big club in a very competitive league, and I am very excited to get started in England with a fantastic coach and team-mates.
“Having played against Chelsea last season I know the high quality of the squad I am joining.
“I would like to thank everybody at Atletico who made me into the player I am, it was an incredible time for me, but now I am starting a new adventure and I hope to win many trophies with Chelsea.”
However, he was in sensational form for Atleti last season to help them reach the Champions League final and secure the La Liga title.