Only fair. Should, as Eds said, view all interests as applications and cut it down to 20 selected. Those who miss out can join with other managers? or even conduct a draft at the completion of this one to make up a 2nd tier?
Ftr, I only have a rudimentary knowledge of soccer (and I call it soccer) so I don't want to rob someone of a place. I'll join someone else later on if someone wants me.