Never seen him 'wrestle' but I wish him all the best with that, back problems are a bitch. That said, I really do not see this guy competing in mixed martial arts... ever. Nothing against him but people who have competed in MMA their entire adult lives are still at a considerable disadvantage when they compete at his age, let alone someone who has never competed in MMA and looking to make their debut at 37 years old.
In my opinion, to even introduce this Mickey Gall guy as an opponent was an absolute fuck up of a way to do it. If they wanted to find an opponent for him they should have just gone full 'entertainment value' and brought in someone similar to age and experience. Not some up and coming prospect that is coming into their fighting prime and looking to make a name for themselves in the biggest way possible. Just make the freak show fight and enjoy it for what it is rather than trying to bring him in as this amazing prospect. The whole debacle is a joke and insulting to the actual mixed martial artists who they have on their roster.
