The Dutch coach worked with Portugalâ€™s skipper in their days together at Old Trafford.
He told the Sunday Mirror: â€œIâ€™m often asked whether Cristiano can still Âimprove as a player.
â€œMy answer is that he can, if he keeps developing as a Âperson off the pitch.
â€œCristiano is an exceptional player. But most times it is the â€˜me-me-me showâ€™.
â€œHe is always looking for Âsatisfaction in Âindividual Âmoments. He wants the team to shine on him. But it should be the other way. He should be Âshining on the team.
â€œIn 2008 Cristiano had a Âperiod that he was only busy to please himself.
â€œIn the weeks leading up to the Champions League final against ÂChelsea in ÂMoscow I Âdecided to go and confront him and work on him.
â€œI told him that he could make the Âdifference in the final for United if he was prepared to make himself less important than the team.
â€œAnd he did!
â€œCristiano is an intelligent boy who can Âaccept criticism. But that selfish part of his character is difficult to cut out."