Ricky Burns hopes to become WBO lightweight champion by beating Juan Manuel Marquez rather than have the Mexican relinquish the title.
"If Marquez vacates, obviously I get made full champion," said Burns, who had also moved up a weight division.
"But I would prefer it if he moved back down. I'd like to win it that way."
At 38, Marquez may opt to retire or try to negotiate a fourth money-spinning meeting with the legendary Pacquiao.
"Win, lose or draw, just to get in the ring with one of the best pound-for-pound fighters would be great for me," added Burns.
"But I'll fight anybody that's put in front of me."
Burns, who was making the Scottish Cup fourth round draw at Hampden, revealed that his next fight is scheduled for the end of February or beginning of March.
And promoter Frank Warren is keen to stage the bout in Glasgow, with Burns having travelled to Liverpool and London for his two previous victories.
Veteran Marquez is unlikely to find a trip to Scotland appealing but Burns believes there are other high-calibre contenders.
"I know Kevin Mitchell would like a crack at me," said the Coatbridge fighter.
"And there would be the winner of Brandon Rios versus Johnny Murray, who are fighting for the WBA title [on 3 December]."