It emerged today United had dropped their pursuit of the Dutchman due to his wild personal demands.
Speaking before an audience in Dunfermline on behalf of the Mary Leishman Foundation, Ferguson was asked as to how he keeps a wealthy group of players in check.
"All they want to do is play football," said Ferguson. "That's the hold I have over them, that's my strength. No matter about their private lives, their egos, they all want to play football and all want to win.
"Most of these boys say they are working class but they are not. Their fathers or grandfathers might have been but they're not. I try very hard to make them think as if they are working class. It's an important issue that, a quality. You have to know what it means to be working class and what a working-class ethic is."