Phil would never work for Riley.
The issue is this. The teams interested in Wade are teams that Miami would have to compete against. The low level teams won't make offers because Wade doesn't help them in the 2 year window they'd have with him, so a team like New Orleans would hang up because they're in no position to compete for anything while Wade is there.
They'll likely never be in a position to compete for a title and they probably know that. Wade would put people in the seats though and maybe even make them a playoff team.