Conor should've learned from that fight with Floyd, that he doesn't fit the standard to fight top ranked boxers.
Maybe it's us the fans should learn that an MMA fighter can't win against a legendary boxers, and now he is trying to convince Pacman to fight just for money, I am sure Conor have learn in the first fight but he is willing to make mistakes again, just for the same big price he enjoyed in their fight with Mayweather.
Of course we know that a MMA fighter can't win against a boxer, not unless the MMA fighter has a good stand up skills with the level of Conor and fight some B-side boxer, but it won't happen because we all know that he won't simply fight someone. He is looking for big money fights like Mayweather prior and then Pacquiao next.
So it's really up to Manny to accept the challenge or not. Manny will be different though, he is aggressive even at his age so I don't know if Conor can last at least 6-10 rounds with Pacquiao and not getting knock out.