Louis van Gaal (Netherlands): Known as a tactical mastermind, this Dutch manager has already been hired by Manchester United for the next football season. A ruthless tactician, who is not afraid to take risks in the game, Van Gaal is known to switch star players for rookies for some great strategic advantage. Style: Usually wears a business suit or a rumpled white shirt on the field. Sports a buzz cut. Nickname: Czar of Alkmaar. (Reuters Photo)