Floyd Mayweather's father tells TMZ Sports he's "pretty sure" his son is down for the rematch with Manny Pacquiao ... and he's warning PacMan that TBE will "kick his ass" again!!!
"I'm pretty sure that they gonna fight," Floyd Sr. told us on the way into the Beverly Wilshire hotel ... "If Pacquiao says he wants to fight, I'm pretty sure they're gonna fight again."
Floyd Sr. would know ... he's pretty tight with his son. In fact, Floyd Jr. gave a heartfelt speech at his father's Nevada Boxing Hall of Fame induction earlier this month.