Dillian Whyte is ready to answer an SOS from Anthony Joshua.
Joshua may be on the lookout for a new opponent after Jarrell Miller failed a drugs test, throwing their June 1 showdown into serious doubt.
Miller will face a hearing with the New York Athletic Commission and could be banned as a result of testing positive for a banned substance.
Whyte was expected to fight Joshua earlier this month in a rematch of their 2015 fight, but terms could not be agreed.
He is unlikely to replace Miller with promoter Eddie Hearn planning to keep his star in the Big Apple.
Anthony Joshua's potential opponents if Jarrell Miller is banned for failed drugs test
But Whyte told talkSPORT : "I would jump in and have some.
"I would take the fight with Joshua at the drop of the hat. I would fight him seven days a week.
"If they want it, they can have it. Simple as that.
"I can whip myself into shape for the right opportunity. I can just push for a few weeks and get sparring.
"When opportunities like these present themselves you’ve got to take them.
Jarrell Miller fails drugs test ahead of Anthony Joshua fight
"I don’t know all the ins and outs [of Miller’s doping results] so until the full report is produced, we don’t know if it’s something simple or it’s something major.
"We’ll wait and see."
Whyte beat Joshua as an amateur but was knocked out in the seventh round of their professional slugfest four years ago.
