I think you'll find plenty of people willing to assist. In my final season as U21 coach, I went down the path of having a large staff, I think I had 10 or so people helping. Some were active, some weren't. Ideally, I think if you could have a staff of around 5 people, each taking care of 15 or so players, that's probably what is needed to get the job done well.
Just to give an idea of the magnitude of the task for an U21 coach, you (or your staff) probably need to keep an eye on 20 players per age group - so around 80 all up. It's too much for one person to do well, unless you live on BB!
Personally, I'd be happy to take on a small role (regardless of who gets the gig), but since I'm not as active as I was, it'd probably only be taking 5 or players under my wings
