Why do managers struggle after stepping up to 'big-six' clubs?
big-six' club is sometimes seen as the natural next step for a manager.**
By the 'big six' we are referring to [Arsenal](/sport/football/teams/arsenal), [Chelsea](/sport/football/teams/chelsea), [Liverpool](/sport/football/teams/liverpool), [Manchester City](/sport/football/teams/manchester-city), [Manchester United](/sport/football/teams/manchester-united