Yeh and as good a player Mata is.. he's not really strengthening our weaknesses. We need a CM and LB urgently, if United can splash that on Mata with Rooney/Januzaj/Kagawa all capable playing of the same position, then they can splash ?30m or whatever it would take for someone we desperately need in a CM position.
Plus Carrick out for roughly 3 weeks... we're near bare bones right now.
Dude you keeping on looking for negatives. Here is my 2 cents on this.
We need CM desperately that doesn't mean we have to stop improving on what we have. Players like Mata won't be available everytime, when they are you just have to take the risk and sign him. I said same last summer. I would be happy if we sign Ronaldo and noone in that window as you don't get chance to sign him everytime. You can wait for a year and address CM issuess but even if you wait for 5 years you won't get chance to sign Ronaldo/Mata.
Is Mata better than what we have? Comfortably. So what's wrong in improving the team when all we can do is try to improve CM dept and end up with no one?