Floyd Mayweather and Manny Pacquiao were at odds over the proposed format for their rematch before they eventually agreed terms.The boxing legends are set to run back their rivalry on September 19 at the Las Vegas Sphere, 11 years after their lucrative first fight.Pacquiao has already rekindled the flame, threatening to take away Mayweather’s invincibilityGettyThat night in May 2015, Mayweather got his hand raised via unanimous decision, but Pacquiao is now out to exact his revenge by taking ‘TBE’s’ 0.Mayweather had initially pushed for the rematch to be an exhibition, so as not risk a blemish on his perfect 50-0 record.However, Pacquiao flat-out refused the request. The Filipino superstar returned to the paid ranks last July to hold Mario Barrios to a draw in a WBC welterweight title fight.Keen to keep the momentum going, Pacquiao declared that he wouldn’t renew his hostilities with Mayweather unless it was a professional contest.“It just happened that I’m still active in boxing and he came out of retirement to do it again, so this is it,” Pacquiao told SportsCenter.“I learnt a lot from that fight way back in 2015. I think we became mature in how to handle (the pressure), and I hope it doesn’t happen again like it did in 2015. “I’m hoping for this time around, no more excuses, especially to my condition and also for everything.“Before, he wanted an exhibition fight against me, but I disagreed, and I didn’t want to fight with exhibition (rules).“I want to fight a real fight, so this is it, this is what I’ve been waiting for,” Pacquiao continued.Pacquiao wants to supervise his son’s training if he is to have another fightGettyHe later warned Mayweather: “I want Floyd to live with the one loss on his professional record and always remember who gave it to him.”While Pacquiao has had plenty to say, Mayweather has only released one short statement since the announcement.“I already fought and beat Manny once,” Mayweather said in a statement. “This time will be the same result.” Pacquiao and Mayweather are set square off at welterweight (147lbs), the same weight that they met at the first time around.The bout will also take place over an identical 12 3-minute rounds.