The upcoming movie will be based on Armstrong’s former teammate Tyler Hamilton’s book “The Secret Race,” in which Hamilton details of “the most sophisticated, professionalized and successful doping program” in all of sports.

An insider told The Sun, ”Most sports films end in an inspirational victory. It’s hard to work out what the ending would be.”

This would be the second Armstrong project Damon has been linked to. Damon was in line to play Armstrong in the now-dropped Sony adaptation of Armstrong’s memoir, It’s “Not About the Bike,” which was to be produced by Bourne franchise’s Frank Marshall.

Damon’s representatives denied the actor will narrate the upcoming Alex Gibney directed Armstrong documentary.