"This is a fight for everything, and it's not out of the question that it will be my last. I could end my career with a flashy win and walk away. It would be something important for me, my country and my family," said the only eight-weight champion in boxing history.
"I feel great, but anything happens in the ring. I'm certainly not getting any younger and I'm not as good as I was when I was 25, but I still love what I do, enjoy every workout and learn something new about myself every day," Pacquiao added.
In the United States, Saturday night in Las Vegas will be broadcast on pay-per-view on FOX.