The revelations in Kevin Pietersen's book about the friction within England's dressing room cause Simon Kuper, writing in
Financial Times, to wonder whether conflict is necessarily a bad thing in sporting teams.
Cruyff was always quarrelling (often with Michels). He thought quarrels drove creativity, because they made everyone think harder about how to play, and gave each warring party something to prove. If your teammates dislike you, you have to prove your quality. The "conflict model", as Cruyff called it, acknowledges the reality that most players in a team are motivated chiefly by their individual careers.