WBO welterweight world champion Manny Pacquiao said Tuesday he felt like a young man in his twenties and would relish another crack at Floyd Mayweather. The Filipino icon, 37, made a winning comeback from his brief retirement earlier this month and said he was in great shape to try to avenge his defeat to Mayweather last year in the richest fight in boxing history. "I feel young. I feel like I'm just 25, or that I'm just 28 years old," Pacquiao told ABS-CBN television. Asked if he wanted to fight Mayweather again, Pacquiao said: "Of course, if he wants to come back (to) boxing". Pacquiao fuelled talk of "Pacquiao-Mayweather 2" when he invited the undefeated American, who retired in September 2015, to attend his successful comeback against Jessie Vargas in Las Vegas on Nov. 5. Last week, Pacquiao teased fans about a possible rematch by posting pictures on social media wearing a suit bearing photos of him and Mayweather in the lining. But Mayweather, 39, said days later he had no plans to come out of retirement. Pacquiao originally retired in May after beating American Timothy Bradley in a non-title fight before standing for and winning a seat in the Philippines Senate. But he said he would not be stepping away from the ring again anytime soon. "I still believe in my skills. You just need discipline, how you discipline yourself and work hard," Pacquiao said, adding he would only walk away once he no longer wanted to put in the long hours of training. "Because once you get lazy, that's the start of the decline of your performance and your body." Top Rank chief Bob Arum is, meanwhile, toying with the idea of pitting Pacquiao against Ukrainian star Vasyl Lomachenko sometime next year. In a recent conference call, Arum said Lomachenko will put himself in a better position for a clash with Pacquiao if he takes care of Nicholas Walters in his WBO super featherweight title defense this weekend. Walters is the same fighter who stopped Nonito Donaire Jr. in 2014, and his upcoming fight with Lomachenko is considered the last remaining major bout this year. Arum said the 28-year-old Lomachenko (6-1, with 4 KOs), a legendary amateur boxer and Olympian, is destined for stardom.