He said in an interview with Chelsea’s official website: "This move is a dream come true. I am very excited to have signed for Chelsea, one of the biggest clubs in the world. I can’t wait to get to know everyone and to start playing with all my new teammates
“I am very happy with how the last 12 months have panned out. I am very confident in myself and I know what qualities I have. Luckily I had the chance to show myself on the biggest stage in Spain and now I am very happy to have the chance to do that at one of the biggest clubs in the world.
“I always liked watching Chelsea because I watched a lot of Petr Cech growing up, so Chelsea were one of my favourite teams to follow.”