"I'm very happy at Barcelona," said the 24-year old. "I feel important for my club and for my country.
"I know what type of player I am, I know that I am a great player, I know that I can win games. I remain one of the best in the world even if I don't score.
"I am not a player who will score three or five goals per game.
"I give passes, and also score sometimes. I am not really a penalty box goalscorer, but I know I am still one of the best players in the world."