The report cited anonymous sources and said Armstrong was considering a confession to help restore his athletic career in triathlons and running events at age 41. Armstrong was been banned for life from cycling and cannot compete in athletic events sanctioned by the U.S. Anti-Doping Agency and the World Anti-Doping Agency.

Yet Armstrong attorney Tim Herman denied that Armstrong has reached out to USADA chief executive Travis Tygart and David Howman, director general of the World Anti-Doping Agency.

Herman said 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 recovered from testicular cancer that had spread to his lungs and brain, won the Tour de France from 1999-2005. Although he has vehemently denied doping, Armstrong's athletic career crumbled under the weight of a massive report by USADA detailing allegations of drug use by Armstrong and his teammates on his U.S. Postal Service teams.

The report caused Armstrong to lose most of his personal corporate sponsors and he recently stepped down from the board of Livestrong, the cancer-fighting charity he founded in 1997.

Armstrong is facing other legal hurdles.

The U.S. Department of Justice is considering whether to join a federal whistle-blower lawsuit filed by former Armstrong teammate Floyd Landis. A Dallas-based promotions company has also said it wants to recover several million dollars paid to Armstrong in bonuses for winning the Tour de France. The British newspaper The Sunday Times has sued Armstrong to recover $500,000 paid to him to settle a libel lawsuit.