Terry Madden, who led USADA from 2000-07, corroborated a story current CEO Travis Tygart told in an interview earlier this month.
In his interview with Oprah Winfrey on Friday, Armstrong said no one in his camp made such an offer.
Madden countered that, saying the representative called Tygart — then USADA's general counsel — who came to Madden's office with the proposal.
"Then, 10 seconds later, because of our ethics, I told Travis to turn it down," Madden said.
Madden said he could not name the Armstrong representative because of a pending federal whistleblower lawsuit against the cyclist.
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