It's been a great decade. Long may it continue.Man utd are another case of when you have a champion coach/manager like they did in Sir Alex Ferguson they are impossible to replace.
You could argue Fergie's methods were brutal and he was ruthless with his players. You only have to look at the Beckham doco when Beckham didnt want to leave but Fergie was sick of the other stuff that came with Beckham where he wanted full control over his players.
But it got results.
I didnt think a rich & powerful club/brand would struggle so much if anyone could overcome and cope with the resources they have in losing a manager like Ferguson it would be Man Utd. But they have how many managers have come and gone since Ferguson in the past decade.