They will be greedy for sure, because it's all about the money that they can generate and that's why both parties are willing to do it. And I think that's their motivation here, it's more on the financial side now as compare to who is the best of their generation and it has been debated for many years since they retire, Mayweather's 50-0 undefeated, or Pacman's record of 8 divisional champion that has never been done before.
I saw in one thread that Canelo is commanding $35 million in his next fight. So what's more here? Most likely it could be in the tune of $50 million guaranteed each of them. So definitely, there are a lot of money to be made and it could really make profits for Rizin too if they are the one who is going to make this fight.
You still couldn't deny the bad-blood side of things. On one hand we got someone who fought by the book and won in technicalities and another side who thought they got cheated out of their supposedly final and most monumental win, and a massive dent at the opponent's record.
Ever wondered why despite the fact that the Mayweather vs. Pacquiao fight's advertised by many sports network as the last fight for Pacquiao before he hang his gloves, only to come back to boxing a couple more times until last 2022? Because he's a lost sheep. He wanted to fight Mayweather, got a taste of it, and instead of getting his self-actualization what he instead received is a pack-full of self-doubt and a hole in his wallet. He fought other fighters afterwards to chase the high and probably find the same actualized feeling by beating other fighters but it just won't do. He needs to fight Mayweather and beat him this time. Which is why there's a huge chance this fight's gonna happen.
Add to that the fact that he's got a lot of time in his hands now that he's not running for Presidency, and his plea to be allowed to participate in the Olympics despite the age limit is denied, and we got a solid chance at seeing these two folks pit it out again soon.