By Lem Satterfield

WBA/WBO lightweight champion Juan Manuel Marquez was left as the odd man out when Manny Pacquiao finalized a deal to face "Sugar" Shane Mosley on May 7 at the MGM Grand in Las Vegas. Besides the difference in weight, and the large purse demand, Top Rank's CEO Bob Arum is not convinced that Marquez is capable of hanging with Pacquiao at 147-pounds. Their previous two meetings took place at featherweight and super featherweight.

"The old fights at the lower weights, where Manny knocked Marquez down four times are not relevant because that was before he really learned how to fight, and before his body developed into that of a welterweight," said Arum.

"Can you imagine what he would do to Marquez now if he knocked him down the same way?. Manny would wipe the floor with him in one or two rounds. And then what the f**k do I do? How would I sell Manny's next fight?"

Arum also said that Golden Boy Promotions, on behalf of Marquez "overpriced" the Mexican, three-division champion, who reportedly asked for a $5 million guarantee, while making $5 per pay-per-view buy above 500,000, for $8.5 million total if the fight generated 1.2 million buys.

Arum is willing to entertain a fight with Marquez at a later date, if the Mexican can prove himself at welterweight. Marquez went to 147 last September and was dominated in a one-sided match with Floyd Mayweather Jr. Arum tells BoxingScene.com's Robert Morales that he would like to see Marquez in the ring with unbeaten WBC champion Andre Berto. If Marquez beats Berto, then Arum is convinced that another Pacquiao fight is deserved at 147.

"Put Marquez in with Berto, let's see what he does," Arum said. "If he beats Berto, well, obviously, he can fight a Pacquiao. But I don't think he can fight at the higher weights. It doesn't say anything about his ability as a fighter. He's a good fighter, nice fellow."

Lem Satterfield is the boxing editor at AOL FanHouse and the news editor at BoxingScene.com. To read more from Lem Satterfield, go to AOL FanHouse by Clicking Here .