Hard one really because on his day like others have said he is a world class, other days wouldn't even pick him for a league one team.
The biggest problem for him is position of play is he a striker or a winger i do think he likes to play out wide because he doesn't get the scrutiny about scoring as much as a winger.
I do also agree a lot the attention is because he plays for UTD if he was playing for someone like Palace he would be just classed as a good solid premiership player and then not linked with the serious teams like PSG, Barca.