#4 Manny Pacquiao
Manny Pacquiao's star has diminished over the last few years and that much is obvious. He's suffered a few losses here and there, including a defeat at the hands of Mayweather himself, however, he's still regarded by many to be one of the best in the business.
As such, McGregor may see dollar signs when it comes to a potential match between the two icons of their respective sports.
He's all tied up with a man who will feature later on this list right now, but afterwards, Manny could potentially see a battle with Conor as a retirement fight. One last big pay day would suit him very nicely indeed, and McGregor's chances of actually coming away with the victory would increase substantially against the Superstar.
Now to someone who is more than up for a battle against The Notorious One.
