Juan Mata has completed his transfer from Valencia to Chelsea for a fee believed to be £23m.
The two clubs agreed a price for the Spanish World Cup winner on Sunday evening and he flew into London to undergo a medical and discuss personal terms on Monday.
After finalising the deal, Mata has revealed that Chelsea manager Andre Villas-Boas played a major role in his decision to leave Spain.
"He [Villas-Boas] said he wanted Chelsea this season to play more attacking football, and that I would be a big part of that," the 23-year-old told the club's official website.
"Villas-Boas is someone who won almost everything last year and we are both here with the idea of winning lots this season.
"The plan is that I can play on either flank or even in the middle playing in between the lines of midfield and attack. I like to keep the ball and use it well, I am an attacking player and above all I like to set up goals and score them also."
Mata has penned a five-year contract at Stamford Bridge.
