As I mentioned previously, Ozil’s ex-Madrid links are too strong.
If he joins Barca, can you imagine him being booed by the Madrid fans, as well as the Barca fans if he has a bad game?
For a player sensitive to criticism about his body language, that would probably affect him too much in the big games.
A creative player like Ozil, with defensive cover from Matic, and all the youngsters around him … He should really join Mourinho at United.
Besides, the boss has big enough a persona to deflect the criticism away from him, allowing him to do his best and focus on the game.