On Antony: In terms of the transfer, it's very expensive without a doubt, but that's football these days (and Man Utd's poor planning makes it even worse). However, ETH knows the player well, he's familiar with the Man Utd squad now and the league in general, and he clearly thinks Antony can improve his game and become one of the best attackers in the world - let's hope he's right.
I will indulge you even though it's pointless.
It's difficult to judge based purely on stats alone. Antony may not get many goals or assists, but he may run teams ragged and cause them a lot of problems. That can be a contribution too.
He's not walking into a good squad either, it's full of problems, so he'll likely take longer to settle in compared to Diaz at Liverpool for example. Based on that, if he can get anywhere near Diaz's stats, that would be a good showing - not that I'm expecting that.