The only way he ends up at us is if we blow everyone out of the water.
Realistically there are only a few teams that could afford him and he is already at one of them so if he does end up leaving then there are only a few possible destinations due to the price and wages:
Real Madrid - obvious choice. They can afford him and the wages he will demand - they are the biggest team in the world and have the stage for him.
B.Munich - cant see him going to another one horse league
Us - we would have to blow our wage structure apart to get him - we have shown previously we wont do that but would we change that for him? We know we could afford him but to get him out of Madrids clutches we would have to be outrageous with the amount we would offer him and PSG to tempt him. We would have to get him while Pep is here so that gives us 2-3 years more to do so.
Utd - they have shown they are willing to pay whatever it takes to get players - they would do anything to stop us getting someone like him and the likes of Sanchez has shown that if the money is right people will choose playing for PEG over Pep (or other clubs as well)
Chelski - could afford him and they have the bright lights of London but thats about it.
Other than that there could be some stupid offer from the chinese super league but that would be career suicide at this point in his development and career.