If he was mature enough to do that, I think it would work and I seriously doubt if issues would arise with the other players. He would be a talented footballer in most teams, football ability earns some respect.
We have had plenty of dysfunctional players who were treated leniently/given leeway, but they wanted to play.
In that interview of sorts with Trap on Sunday, he has kicked SI well into touch by saying more or less that 'we have McCarthy, we are preparing McCarthy we make promises of sorts to McCarthy, how can I turn around and say to McCarthy in the next campaign to go away home, for him (SI)'
I wonder if Trap spat into a spitoon when saying "for him".