To be honest, i personally do not see any potential in Manchester United, yeah i know that have a new manager and there is so much hype surrounding him at the moment, but who is sure he is going to turn out successful, remember that managers like Mourinho have come and gone, yet no visible improvement. United obviously can't win the league next season, or anytime soon for that matter, they are also not in the CL, and who is sure when next they will play in the CL, so where's the potential.

Barcelona on the other hand had a very good season, they started very poorly, but Xavi was able to restore the confidence and desire to win back in the players which made them finish high on the table, now they have a high morale coming into next season, and i am pretty sure they will compete with Real Madrid for the Laliga title, they are also in the CL, there is obviously more potential in their team than in United's.