The excuses look more and more daft each week tbh. Sick of saying it but if he wants to be a United player HE needs to do more. If he needs everyone else to do that for him, then he's little more than an obstacle.
We can build a great team around Mata and hope he starts playing well, or we can just build a great team around players who already play well. One of these options is easier and much, much more sensible than the other.
That said I wouldn't say he isn't working hard enough. It's more that he just isn't doing enough. He puts a shift in, and he makes runs, but he gets the ball and takes too long to do nothing with it. He closes people down and takes up his position off the ball, but in a way that means he may as well not be there.
He needs to grow a set basically, and play as if he thinks he's the best player on the pitch. Instead of just being a smoothed up Tom Cleverley.
For shame, Noodles.