Striker Diego Costa has completed his transfer to Chelsea and signed a five-year contract, the club announced on Monday.
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.’
Last season, the 25-year-old Costa led Atletico Madrid to its first La Liga title in 18 years and an appearance in the Champions League Final, where the club lost to Real Madrid. He netted 27 goals in 2013-14 La Liga competition, only four fewer than league leader Cristiano Ronaldo of Real Madrid.
Chelsea finished third in the 2013-14 Premier League with 82 points, four behind league champion Manchester City.
-- Chris Johnson