Some still think that there is a chance of another rematch between Pacquiao and Mayweather. The amount of money to be had if they fought again would be immense and Floyd already has career winnigns over one billion.
I don't think that it will happen. Manny Pacquiao has tried his best to schedule a rematch, but Floyd Mayweather has rejected his request outright. We can't blame Floyd for that as he is having much better options when compared to Pacquiao. Also he may be thinking that a rematch may accrue less revenue when compared to the original match.
Maybe your right but Floyd doesn't really have anyone left to fight and the way he is blowing through money he may some really big payouts before he is too old to continue boxing.