The 24-year-old is the favourite to win the 2011 FIFA Ballon d'Or and would be the first player since Michel Platini to lift the trophy three times in a row.

Guardiola feels the Argentina international is still improving and getting better every year.

"You always think he has reached the top, but then gets better again, because he plays more and gains experience," Guardiola said.

"He now understands the collective game better. Just this fact makes him perform even better for Barcelona."

Messi faces competition from team-mate Xavi and Real Madrid attacker Cristiano Ronaldo in the race for the Ballon d'Or.

The winner will be announced at a gala at the Kongresshaus in Zurich on January 9.