Clueless if you're trying to compare running a company to coaching & mentoring a bunch of over paid footballers.OK - it's not important you're right, give it to Noel Edmonds then
Course you need a good assistant, you might not hear about some of them but it's still a vital job. Saying it isn't important is like saying why do businesses need good sales managers or ops managers if they have a good sales/ops director
Please state how you know Giggs isn't a good assistant manager? Who has leaking how he coaches the players to you or the media? Who from within the club has questioned his credentials or ability? I've seen zip & all I see now are a bunch of children blaming him for the tactics/ philosophy LvG is installing into the players.