He also seems to be very well situated in Barcelona, being a family man with a wife and children, all of whom probably feel very much at home there. He can't just uproot all of that and move his family to freaking Manchester out of the blue. If he was still a single guy, and not to mention a different guy with less loyalty (Read: Neymar), then this would be more worrying than it currently is. I guess all of this is why fans are not more worried in general. There seems to be a very strong feeling of it being impossible for him to leave Barcelona and play for a rival club, and I tend to agree. I think this will be the only European club he'll play for.