"If he comes back into boxing there is a possibility, but right now we are not talking or discussing about that," Pacquiao told Kyodo news agency on a visit to Japan on Saturday.
The 37-year-old ended his own brief retirement earlier this month by taking the WBO welterweight title off American Jessie Vargas in a unanimous points decision.
"I don't know when my career will end," the southpaw added.
"I realised I felt lonely inside because ... I am no longer active in the sport of boxing. I asked myself if I can still fight, and I decided to come back and continue the journey of my career."
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Discussions about Pacquiao's next fight have been put on the backburner for the time being while he focuses on his career in politics.
The former eight-division world champion served as a congressman before being elected to the Philippines senate in May.
"Actually, we are not talking about or discussing about my next fight because I am so busy working in the office as a senator," he said. "That's my focus right now."
(Reporting by Debanjan Bose in Bengaluru)
