Was very good in the WC, it would be ridiculous if he was available to you and you decided to toe the line with the bidding as even if he was going to cost closer to 20m than 10m, it would be worth it. He'd instantly improve you and allow you to sell/loan out the players that you feel are surplus to requirements. I think that if he was in the side you wouldn't feel the defencive deficiencies of Mata as he offers a very high work rate going forwards and back. He'd basically allow the team to be a little more solidified and composed at the same time. Not spectacular in either part of the game but someone who is that extra cog that means everyone else is ticking.