There is huge monetary incentive for Floyd not to win. A rematch is worth as much as this match and they could even set up a trilogy. Mayweather spends money faster than any human can possibly do. Don't talk about legacy. There is none. This a non-sanctioned match by the boxing authorities. Connor is not ranked by any of the governing bodies. This is WWE at it's finest. These two guys can set this match up to look better than the Bolshoi Ballet. If they could get three matches Connor will have more money than he ever dreamed. His net worth will be higher than any other boxer who has ever fought other than Floyd. If you are wagering on this match as it being legitimate then you must believe they actually saw a lady in half. Only a select few people know what is going to happen. Floyd might have no interest in setting up three big paydays. Would you want to leave hundreds of millions on the table. Don't talk about integrity in boxing. The whole sport is built on bullshit. Dishonest judges, Dishonest promoters, Dishonest refs and Dishonest boxers.
You never know but I think it'll be legitimate. If Floyd lost, I don't think the appetite for the rematch is nearly what people think. The novelty would pretty much be off, who would care if he "avenged" a loss to McGregor? McGregor would've already done the unthinkable. And if McGregor does win, most of us will just think it was rigged anyway.
They're already getting away with a lot by selling this, trying to really go full fledged Vince McMahon is a recipe for disaster.