Audley Harrison hopes to challenge British heavyweight champion Scott Gammer at Wembley Arena on 17 February.
Harrison surprised many with his demolition of Danny Williams
The Olympic gold medallist wants the bout to be the first of three on his way to a world title fight.
After his three-round destruction of Danny Williams last Saturday, Harrison has joined with promoter Frank Warren.
But Gammer's manager, Paul Boyce, says the Welshman may still look elsewhere for his next opponent, with Williams or Michael Sprott possibilities.
There is still a contract in place for Gammer to fight Williams at the Afan Lido on 16 February, although the Brixton Bomber is taking stock of his career following his defeat and needs to recover from his injuries.
Boyce confirmed he has entered talks with European champion Sprott this week, as well as being sounded out about a possible Harrison match-up.
"The only thing we have had is a call asking if we'd consider boxing Audley on that date (17 February)," Boyce said.
I've no regrets about the pathway I chose
"But there's no substance in the Audley Harrison fight at the moment.
"Audley has turned down the chance to fight Scott twice, I've offered him that fight and he's turned it down.
"The contract with Danny Williams is still in place and the British Boxing Board of Control has given Danny some extra time to recover from his injuries.
"But Michael Sprott is a strong possibility as an alternative and we're still negotiating on that."
But Warren revealed he had been approached by the BBBC's general secretary, Simon Block, to see if Harrison would be available to challenge Gammer on 17 February.
"I'm hoping we can make that fight - but if not we will look at other opponents," Warren said.
"If Audley keeps winning, he will fight for the world title in this country, just like Frank Bruno."
If Harrison fights and beats Gammer, Warren hopes to negotiate a subsequent showdown with Matt Skelton, which would double as a world-title eliminator, with the winner facing IBF champion Wladimir Klitschko.
Harrison, who won Olympic heavyweight gold in 2000, said: "I'd prefer the best one - which is Wladimir - because of the pull of him also being an Olympic gold medallist.
"A gold medallist against gold medallist is a huge fight.
"I think (Nikolay) Valuev presents the greatest problems because he's so big, but he has defensive weaknesses and I could expose those."
Harrison, who has steadfastly maintained his independence under his "A-Force" promotional banner, insisted he has no regrets about finally signing up with former rival Warren.
"Obviously I had my own ambitions and goals but I think the time is right to join forces - it's all about trying to get the world title in 2007.
"I've no regrets about the pathway I chose. My intentions were noble and I'm here today with my dreams still intact but it makes sense now."