The U.S. Anti-Doping Agency issued a200-page report Oct. 10 after a wide-scale investigation into Armstrong's alleged use of performance-enhancing substances.
Armstrong won the Tour de France from 1999 to 2005.
According to a source, speaking to ABC News, a representative of Armstrong's once offered to make a donation estimated around $250,000 to the agency, as "60 Minutes Sports" on Showtime first reported.
Lance Armstrong's attorney Tim Herman denied it. "No truth to that story," Herman said. "First Lance heard of it was today [Monday]. He never made any such contribution or suggestion." Armstrong, who himself recovered from testicular cancer, created the Lance Armstrong Foundation (now known as the LIVESTRONG Foundation) to help people with cancer cope, as well as foster a community for cancer awareness. Armstrong resigned late last year as chairman of the LIVESTRONG Foundation, which raised millions of dollars in the fight against cancer.
The New York Times reported Jan. 4 that Armstrong told associates he is considering admitting that he used banned performance-enhancing drugs and blood transfusions during his cycling career. The Times' unnamed sources said he would admit the information in order to restore his eligibility in athletic events such as triathlons and running events.
Herman denied the claims were true.
Herman told The Associated Press he had no knowledge of Armstrong considering a confession and said: "When, and if, Lance has something to say, there won't be any secret about it."
Armstrong, who has spent so much energy bitterly fighting accusers and whistleblowers, has left many questioning whether Winfrey's televised absolution will be able to help his cause.
Winfrey tweeted the news to her followers last Tuesday night. "BREAKING NEWS: Looking forward to this conversation with @lancearmstrong #nextchapter."