How much MONEY would it take for Floyd/Manny to finally agree to fight?

Plain in simple. How much money do you guys think it would take for both Floyd Mayweather and Manny Pacquiao to agree to each others demands, put the BS to the side, and finally sign on the dotted line to fight each other? Im talking about the type of money that would really sit both sides down at a table and be so lucrative that neither fighter could walk away from it. How much? Im thinking 75 million each. I dont think 75 mil is too much if Manny and Floyd could both sell over 1 mill PPV domestically and make at least 25 million any time they step in the ring. Manny/Floyd would be at least 3x bigger "globally" than any other fight they could possibly make.