I guess that is the more reason why Pacquiao would not fight Jeff Horn. If Pacquiao said that he only wants to fight 2-3 boxers, I would not include Jeff horn anymore since if I will be Pacquiao and I will be choosing having a rematch? that will be Mayweather. There is no reason to fight Jeff Horn no more, he just calling out Pacquiao since he's career is starting to crumble.
I really don't think that Mayweather would come back for a rematch with Pacquiao. There is not benefit to doing so, it doesn't improve his legacy, the pay-day probably won't be as big as with McGregor, and he certainly doesn't need the money. I think Mayweather will stay retired unless there is a Mayweather/McGregor rematch (unlikely).
I disagree. The rematch could even surpassed their previous records and if the money is on the table, I sure that Mayweather will come out of his retirement and get the final paycheck worth hundreds of millions of dollars, that is if he decided to. As for Jeff Horn, he should go back to Australia now, he can't have a decent career in the US will a lot of 140lbs - 147 lbs that can easily beat him. He is obviously calling Manny to get another exposure and good paycheck.
So you're saying that a fight between Pacman and McGregor would receiving more PPVs than Mayweather/McGregor 2? I highly doubt that. Also there's absolutely no benefit, other than financial to fight Pacman, right now, I think Mayweather won't be taking any fights that won't both improve his legacy and earn him crap loads, so maybe he'll fight Lomachenko or something, but that's it.