If Arum puts Pacquiao in with a dangerous guy like Brandon Rios
we know he is using Pacquiao as a gatekeeper, if this is Pac's next opponent for April, Pacman will get knocked out pretty bad again. Bob Arum needs to transfer the draw power to Rios, he knows Pacman is already done and this fight is going to cause Pacman some serious brain damage, as slow as Margarito was and he was able to hit Pacman, Rios is faster than Margarito and more relentless.
Rios is a huge guy who drains himself just to make 140, he has power, and if he fights at 147 he won't have to cut too much weight helping his stamina and he has an iron chin.
Pacman will get hit hard in this fight, the only way he can win is if he can some how upset Rios and Arum's plan backfires like Roberto Duran did to Davey Moore which Arum also promoted.
The best fight to do is a rematch with Timothy Bradley, Marquez should just retire on cloud 9.
Pacman should rematch Bradley and than Arum should try to make the Mayweather fight and cash Pacman out in September to get whatever little money is left of that fight.