How about this scenario? Player guest plays with a team. Comes home and says "I really like that team - I'd rather play with them next season". Dad says "Well son, you can't because you've committed to Team A, and the rule says you can't go this team without your coach's permission". -- "Well, can't we get it?" -- "I asked him, and he said "no'. " -- "Ok Dad, could we just give coach the club's money back so that I can play where I want to?" -- "Son, you don't understand, we payed the money to the club, not the other way around". - "Oh .."
The one part of this scenario that I have a hard time envisioning is the coach refusing to consent. I would never withold consent for a player to leave my team if he wanted to. I might want to discuss the choice with the parent, but it's their decision.
