The Association of Football Agents are demanding 'a retraction and an apology' from Colin Gordon for his comments about corruption in football.
The AFA, who represent 80 of the 289 FIFA-registered agents in England but not Gordon, say they are 'considering their position' following what they consider 'potentially defamatory' remarks from the man who represents England boss Steve McClaren.
Gordon, who is also Theo Walcott's agent, claimed 'tens of millions of pounds has gone out of the game' in corrupt deals.
A statement from the AFA read: 'The Association and its members consider the statements made by Mr Gordon to be not only reckless and inappropriate but also potentially defamatory and are considering their position in that respect.
'They will be contacting Mr Gordon personally to seek a retraction and an apology in any event, but meanwhile, if Mr Gordon does have specific information regarding specific transactions and individuals it would be helpful and in the interest of football generally, if he could also make that public.'
The Lord Stevens inquiry, launched by the Premier League, into alleged bung payments is due to report its preliminary findings next Monday.
The statement from AFA went on to question Gordon's motives for his comments.
'The Association is, to say the least, surprised, that Mr Gordon has chosen to make such comments public at this stage rather than having brought them to the attention of the footballing authorities at the relevant time,' the statement continued.
'This assumes that he has some genuine basis for his allegations and in that respect, given the general scatter-gun nature of his approach, the Association is somewhat sceptical.
'The Association is, itself, committed to ensuring that the integrity of football is preserved and has made it clear that corrupt practices by agents will not be tolerated.
'It has welcomed the Quest investigation leading to the Stevens Report and has committed itself to full co-operation with the inquiry.'