I doubt McGregor vs Mayweather 2 can happen again. At least not with boxing rules. Mayweather is X leagues above McGregor when it comes to boxing and it's now obvious to everyone, so pay-per-view should not gross anywhere near as much as it did for the first bout.
What would be fun IMO is Tyson Fury getting coached by Conor for UFC (apparently it was mentionned), and try his luck at MMA.
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