He is making money without breaking a sweat. He will not give up that record because if he did, his market value will go down and Senator Manny's market value will skyrocket.
Definitely, the way I understand on his statement, it seems there is no rematch happening.
Both will retire as good fighter but Manny will remain the legend between the two despite he was beaten by Mayweather.
People doesn't care of the record anymore, they care for what the fighter can give and that's what Manny are doing.
I still think that Manny owned that match. Floyd's running away from Manny and all the "hugs" were much more than his punches (at least that's what I think, though.)
But yeah. People nowadays care more about how the fighters performed rather than the outcome. However, with all the chit chats by both fighters in social media, who knows that they'll finally decide to settle things through a square off inside the boxing ring, right? I'll just stay tuned.