This Barcelona squad will need at least 2 more years to get in shape and in the situation to be on the top tier teams in Europe. But at the moment, they are a lower A-tier team I have to say.
~snip~
Their problem is not just with the players, but financially. I don't know if they will be healthy in the time frame you mentioned or not. But I agree, Xavi coming to Barcelona has changed. Xavi tried with players not his choice. Xavi also optimizes the young players from their academy.
I think it's one of the failures of management and regeneration, when barcelona's star players leave or retire they become very weak. Other clubs should start preparing, like Madrid they have some star players who are still playing. So they have to find a replacement from now on.