Joseph Parker will have to get in line to face Deontay Wilder.
The American WBC world champion has set his sights on a heavyweight title unification bout against Anthony Joshua.
Wilder says if the IBF world champ prevails against Wladimir Klitschko in April you will see him fight Joshua.
Wildersays he'll unify the division.
Parker's promoters also plan to speak to Wilder's camp, with Duco Events director David Higgins stating it's also their goal to unify the heavyweight belts.
"We've reached out to the WBO [regarding] our obligations to fight the mandatory challenger," Higgins told Radio Sport.
Should Parker take on and beat Wilder, he would own two of four heavyweight belts.
"Nearly all the greats have lost fights," he said. "It's how you come back that matters. If he is to lose a fight, nothing changes. You get back on the horse; you join the queue again."