Manchester United boss David Moyes has admitted surprise that Chelsea sold them Juan Mata.
Mata penned terms with United on Saturday.
Moyes, who said he would probably look to get Mata involved in Tuesday night's Premier League game against Cardiff, said it was a surprise that the deal was able to be done mid-season.
"I never felt that we would get that opportunity, I wasn't sure that Chelsea would ever sell him to us. Thankfully we got there and I am delighted he is here.
"I'm a bit surprised because it's not something that tends to happen especially between Premier League teams. I was surprised when it happened but we have got a really exciting player, a player I'm looking forward to working with, a player I think everybody in football looked at and says he did a great job for Chelsea.
"I'm looking forward to seeing him in a red jersey and doing it for us."
