Can birthday-boy Nani make the grade at United?

Nani, who turns 23 today, needs to toughen up mentally if he wants to make the grade at United.

When Nani broke into the Sporting CP first-team he was seen as the next big thing to come out of Portugal, after Cristiano Ronaldo that is. After his big move to Manchester United he has lived in the shadow of his more glorified countryman.