Floyd Mayweather is now just doing exhibitions to earn money to sustain his lifestyle as in exhibition fights he will not be training so hard in the gym to get fit unlike if he will be fighting Manny where he needs to be in great shape because that would be a competitive fight and he will lost his zero if will not train hard

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Bottomline, i think Floyd is already done/retired in boxing and will not risk his life fighting Manny so i think the latter should also do the same, fight in an exhibition fight if he misses the lime light because i don't think that he will do exhibitions for money as he has tons of it right now.
He is surely finished in a regular fight boxing I think Floyd Mayweather has already reached his limits and he already knows this to himself that is why he is declining an offer for a rematch with another retired boxer Manny Pacquaio, I think he really likes to just enjoy himself to all of his Exhibition matches and likely picking fights that he thinks he can win, the thing here is he is already retired and just wants to enjoy this opportunity being retired and happy,
He is just trying to take advantage of the opportunity while he's still famous and known because sooner or later, he will be forgotten and become an old news even if he got an undefeated record during his professional days. And now that he said that he's already done fighting a true fighter, I expect that he won't be fighting McGregor as well because if he accept that fight and rejected the idea to have an exhibition fight with Pacquiao, I will be convinced that he's just trying to duck the Filipino legend, AGAIN!