By Robert Morales

Top Rank CEO Bob Arum has ripped his promotional rival, Golden Boy Promotions CEO Richard Schaefer, for supporting the Team Mayweather statement that was circulated last week by Leonard Ellerbe, the adviser to Floyd Mayweather Jr.

Ellerbe, in his statement, claimed Mayweather and manager Al Haymon were never involved in any form of negotiations for a November fight with Manny Pacquiao.

"Here are the facts," Ellerbe wrote. "Al Haymon, Richard Schaefer and myself speak to each other on a regular basis and the truth is no negotiations have ever taken place nor was there ever a deal agreed upon by Team Mayweather or Floyd Mayweather to fight Manny Pacquiao on November 13. Either Ross Greenburg or Bob Arum is not telling the truth, but history tells us who is lying."

According to Arum, HBO Sports president Ross Greenburg was handling the negotiations between him and Haymon for the last two months. Schaefer told BoxingScene.com several days ago that he backed Ellerbe's statement.

"You read the statement from Leonard and I stand behind that statement, and I have nothing else to add," Schaefer said.

Arum is very disappointed that Schaefer is backing the statement of Ellerbe and Team Mayweather.

"I am really disappointed in him," Arum told BoxingScene. "He knows it's not true. But he's doing whatever he can to cling to the Mayweather boat. I really feel sorry for him. People shouldn't do that. They shouldn't panic. They shouldn't join something so preposterous as to defy imagination."

Schaefer shot back, and threw down a lie-detector challenge. The Golden Boy CEO is willing to take a lie-detector test, along with Arum, to prove which of the two promoters is actually telling the truth about the Mayweather negotiations.

Said Schaefer to BoxingScene: "It's unfortunate Arum feels like that. But I tell you what, I would make myself available for a lie-detector test and let's see who's telling the truth and who's lying. If I say I stand behind Leonard's statement ... it's because it's the truth."