McGregor is in over his head. He can't even outbox Diaz, who is not a boxer, he's gonna face one of the greatest technical defensive boxers of all time for a paycheck and he's gonna get toyed with. He'll throw some bombs that don't connect in round 1, by round 5 he'll be gassed, the last 6 rounds will be identical - 3 punch Mayweather combos that do no damage, clinching, and 10-9 rounds for Mayweather. Fight will not have a knockdown. If McGregor wins a round it will be 1 or 2. Once Mayweather gets going, its over.
Its horrifying, like watching a snake eat, but also predictable and boring, like frozen vegetables. This fight is watching a python take 2 hours to eat a piece of broccoli.