'As far as the sale of Ronaldo to Real Madrid goes, Manchester United have been here before.A club as big as United is going to have big players and players move on. That's a fact of football life.
'Selling Ronaldo to Real Madrid is good business. His comments in the past have intimated that he was not happy.
'There's no point keeping a player in that state of mind as it will eventually start to affect those around him.'
