Man Utd Complete Juan Mata Signing
The Spain midfielder had a medical on Saturday and has signed a contract, understood to run until summer 2018.
Mata, 25, is likely to make his debut at home against Cardiff on Tuesday.
Mata at Chelsea
2011-12: 54 appearances, 12 goals, Champions League winner, FA Cup winner
2012-13: 64 appearances, 20 goals, Europa League winner
2013-14: 17 appearances, 1 goal
In another post he thank every one who gave support when he was at Chelsea. You can read that on his official blog post.