12/16/2014 03:54 EST | Updated 02/15/2015 05:59 EST

Manny Pacquiao calls out Floyd Mayweather

The world may be one step closer to a boxing match between Manny Pacquiao and Floyd Mayweather.

Pacquiao called out Mayweather on Twitter Tuesday asking the undefeated Money May to not "be a boxing humbug."

Pacquiao's tweet comes after Mayweather tried to challenge him to a fight during an interview on Friday asking for the bout to take place May 2, 2015. He said he "absolutely" wants to fight Pacquiao, laying all the blame for the fight not happening yet on Pacquiao and his promoter Bob Arum.