A lot of talk about the fact that its hard to find the perfect place to fit Zlatan, but I think Messi is even harder. He could be used almost any attacking position, but where is he best for the squad?
Its funny when you think about it. Messis nr1 quality, what makes him the best, is his ability to do things on his own. Where do you place the player that is truly special thanks to the fact that he can suddenly run past 5 players and put the ball in the net all by himself? You´d want to optimize the teams performance, without getting in the way of sudden bursts of magic. I think some games messi has been a bit in the way of the team, and sometimes the team has actually been in the way of messi.
Maybe winger is the only place to really fit the bill.