I'm not a big fan of such fights, and would never bought a ticket or pay-per-view for it, but at the same time, I'm not going to lie - I am curious how will that unfold.
Mike might be old, but he still has a lot of power and explosiveness and surely won't be stepping into a ring to get a beating from some showbiz kid.
Paul's weight in recent fights was only around ~84 kg, while Tyson was at 100kg during the fight against Roy Jones Jr. in Nov 2020. I'd imagine Paul will probably want to bulk up a bit.
The current odds on Mike are x3.2, which I think could be a good bet to take.