Has Cesc Fabregas fullfilled his potential ?

As you know, Fabregas was one of Arsenal's better players for years, during that time I think that he played the best football of his career although one can argue he was better at Chelsea.

Then he moved to Barcelona and although he wasn't the main man and didn't win the champions league, he maintained a good level, probably not the dream he had in mind when he joined.

Then went to Chelsea and finally won the Premier League, as one of the key players. Add that to winning La Liga, the Euros...

Has Cesc Fabregas fullfilled his potential ?