Tyson, KO with a 66% probability.
I've been watching videos about this clown Paul these days (never seen any of his "fights" or his YT videos), and I simply can't believe he even dares stepping into the ring with Mike.
I mean, I see that his own company is promoting the fight, so, quite sus. But still, if it's a clean fight, he's out.
People who obsess with the age factor and forget about the technique factor prove the know nothing about fighting.
I will give Paul one chance though, which is being able to survive beyond round three. If that happens and as the rounds progress, then his chances of winning by decision grow by a lot.
After seeing how horrible he is, I totally discard that he is able to take advantage of a tired Tyson to knock him out. He just doesn't have what it takes.