Barcelona defender Gerard Pique admis he joined Manchester United too young.
Since leaving United, Pique has won every top honour in the game.
He told fifa.com: "I was just 17 when I joined United. I came on a lot there, by training in the first-team squad with players like Wayne Rooney and Rio Ferdinand.
"I think I was too young , and barring my path were two of the best centre-backs in the world in Rio and Nemanja Vidic, who Sir Alex Ferguson rated more highly. But it was a very good experience, I still get on well with the coach and my former colleagues and I think it was a very useful period."
