( CNN ) -- A Lance Armstrong representative tried to make a donation of about $ 250,000 to the U.S. Anti-Doping Agency before the agency launched the investigation that led to the cyclist being stripped of his Tour de France titles , the chief of the USADA said . `` I was stunned , '' Travis Tygart , the head of the anti-doping agency told `` 60 Minutes Sports '' about the alleged 2004 offer . ''It was a clear conflict of interest for USADA . We had no hesitation in rejecting that offer . '' Armstrong attorney Tim Herman said there 's no truth to the story . `` He never made any such contribution or suggestion , '' Herman said in a statement e-mailed to CNN Wednesday . Annie Skinner , a spokeswoman for the USADA , told CNN that Tygart 's quotes , released by `` 60 Minutes Sports , '' were accurate . The new accusation is another chapter in the twisting tale of Armstrong , a one-time hero to many who has now fallen in disgrace . Armstrong will give his first television interview since being stripped of his Tour de France titles to Oprah Winfrey , her network announced Tuesday . A news release from the Oprah Winfrey Network said the 90-minute `` no-holds-barred '' interview will air at 9 p.m . ET January 17 and will be simulcast on Oprah.com . Winfrey will ask the cyclist to address the U.S. Anti-Doping Agency 's report , which said there was overwhelming evidence Armstrong was directly involved in a sophisticated doping program , the statement said . The International Cycling Union , which chose not to appeal the USADA 's lifetime ban , stripped Armstrong of his record seven Tour victories in October . Armstrong 's lawyer : No talks with anti-doping agencies . The World Anti-Doping Agency also agreed with the sanctions , which means Armstrong may not compete in sports governed by WADA code . Before the ban , he was competing in Ironman triathlons and had won two of the five events he had entered . Since the ban he has entered two non-sanctioned events . According to his Twitter feed , Armstrong has been biking , running and swimming in Hawaii . The Winfrey interview will take place at Armstrong 's home in Austin , Texas . The New York Times reported last week that Armstrong , 41 , was contemplating publicly admitting he used illegal performance-enhancing drugs . Such an admission might lead toward Armstrong regaining his eligibility . One of his attorneys denied Armstrong was in discussion with the two anti-doping agencies . Dan Wuori , a writer at cycling publication Velo Magazine , said Armstrong may reveal a lot during the Oprah interview . `` I think what we are seeing here is the beginning of Lance 's effort at redemption , '' Wuori said . `` More and more continues to come out about Armstrong . This seems like an effort of Armstrong to get ahead of the story and control the narrative . '' The gain game : Why do sports stars cheat ? Armstrong has repeatedly and vehemently denied that he used banned performance-enhancing drugs as well as illegal blood transfusions during his cycling career . Armstrong has been an icon for his cycling feats and celebrity , bringing more status to a sport wildly popular in some nations but lacking big-name recognition , big money and mass appeal in the United States . He fought back from testicular cancer to win the Tour from 1999 to 2005 . He raised millions via his Lance Armstrong Foundation to help cancer victims and survivors , an effort illustrated by trendy yellow `` LiveSTRONG '' wristbands that helped bring in the money . But Armstrong has long been dogged by doping allegations , with compatriot Floyd Landis -- who was stripped of his 2006 Tour de France title after failing a drug test -- making a series of claims in 2011 . Armstrong sued the USADA last year to stop its investigation of him , arguing it did not have the right to prosecute him . But after a federal judge dismissed the case , Armstrong said he would no longer participate in the investigation . In October 2012 , Armstrong was stripped of his titles and banned from cycling . Weeks later , he stepped down from the board of his foundation , Livestrong . It is unclear whether Armstrong would face criminal prosecution for perjury should he confess . Armstrong was involved in several cases where he gave sworn testimony that he never used banned drugs . Silence falls awaiting Armstrong 's 'last word ' CNN 's Jillian Martin contributed to this report .
NEW : Armstrong 's attorney says the cyclist never tried to make such a donation . Comment: The money was donated by Lance, not his team. Lance Armstrong has agreed to 90-minute interview , Oprah Winfrey 's network announces . Release says Armstrong is expected to talk about doping allegations .