British heavyweight champion Scott Gammer's manager says that Audley Harrison has nothing to offer them to fight in London in February.
Gammer is keen to defend the British title in his native Wales
Harrison's new promoter, Frank Warren, says they have made a "substantial offer" for Gammer to defend his title.
But Paul Boyce says Wales' Gammer has little incentive other than money to fight Olympic gold medallist Harrison.
"We've had an offer but Scott doesn't need Audley Harrison at the moment, we have other plans," Boyce said.
"The offer isn't what we'd want financially anyway but it doesn't come down to money, I have a plan for Scott's career."
Gammer was meant to fight Danny Williams at the Afan Lido, Port Talbot, on 16 February.
But the injuries Williams received after stepping in at a week's notice against Harrison on 9 December, losing in three rounds, mean he cannot fight Gammer.
Audley Harrison, apart from his name, has got nothing to offer - Audley Harrison isn't a contender
Harrison had been meant to face Commonwealth champion Matt Skelton - who also remains a target for the Gammer camp - only for Skelton to withdraw because of a broken hand.
That has seen Warren court Gammer to face Harrison at Wembley Arena on 17 February, and he is surprised his offer has been rebuffed.
"I'm stunned that Boyce has turned down the biggest pay day of Gammer's career," said Warren.
"I don't think the purses from his last five fights add up to the amount I'm offering him to defend his title against Harrison.
"Maybe Gammer has something different to say about it than Boyce?
Harrison surprised many with his demolition of Danny Williams
"Here's a chance for Gammer to make a name for himself and if he loses to Harrison it will be good experience and one that he can come back from.
"The offer is still there for them but I reckon Boycie will have to discuss it with Marlene first!"
Boyce replied: "Firstly, Scott is the champion - the British champion - based in Wales and I think if he (Harrison) wants that fight then he should come to Wales, and I've told Frank that," Boyce said.
"I'll be discussing it with Scott and his father tonight and I think we've got better options and a better route to go down.
"Scott will probably still box on the 16th, although Danny Williams is certainly out for that date."
Boyce revealed that the contract to face Williams is still in place and a new date is likely to be set for April or May.
Until then Boyce must find his man a new opponent and European champion Michael Sprott is one option for Gammer to face on 16 February in Port Talbot.
"Michael Sprott looks the favourite, especially as he brings the EU title so we can put two titles on the line," Boyce added.
"What people have to realise is that Audley Harrison, apart from his name, has got nothing to offer - Audley Harrison isn't a contender."