He may or may not have a puncher's chance, but anyone can get caught. Slim to none, I guess, but I'll find it hilarious if he pulls something out of his behind.
I would laugh myself into a coma, but would enjoy it.
In all fairness (and you, being an old school MMA guy, might disagree) - it's not like they've taken Tom Hardy and tried to make him a fighter. Punk has some sort of basic Muay Thai or something from years ago (I'm sure I read that?) and, the only undoubtable thing - he can take a shlap/bump/pain.
My head says he's fucked, but who knows. Gall is a kid, like, and who knows how good he actually is?