“I think two years, one and a half [left in boxing],” Usyk told Sky Sports.
“I feel great myself. I feel I have two fights to prepare for, not more. Just two.”
He added: “I will fight [who wins] Joseph Parker, Daniel Dubois, no problem.”
English fighter Dubois, the reigning IBF champion, was defeated by Usyk in 2023 but is keen to avenge that loss should he get past New Zealand’s Parker in Riyadh on February 22.
“I’m just getting better, improving. They say when you win a world title you improve. So I feel like that’s what’s happening with me, I’m ready to show what I can do again and conquer whoever they put in front of me,” Dubois told Sky Sports.