Arum said Wednesday "we have emails confirming" that Gamboa had agreed to terms. But Gamboa wouldn't budge and Arum said he felt he had no option but to sue.

"This would have been a hell of a fight, but what can we do?" Arum said. "We had a deal and he's not living up to the deal. We've sued him, but at this point, we have not made any claims against whoever may have induced him to breach his contract. We'll see about that."

That was clearly a veiled reference to…