He told MUTV: "Age is not important in football in my opinion. Experience yes, but you gain experience if you play and I have played many games at Manchester United with great players and I've won many things. This is why I think age is not important.
"The most difficult challenge now is to keep the same level as last year's. This is what I'm trying to do. I feel prepared for that. My ambition is still the same, my character is still the same and I know what I can do."