Is the best cyclist of the century going to attempt a comeback? Sources: Lance Armstrong coming back.

Lance Armstrong will come out of retirement next year to compete in five road races with the Astana team, according to sources familiar with the developing situation.

Armstrong, who turns 37 this month, will compete in the Amgen Tour of California, Paris-Nice, the Tour de Georgia, the Dauphine-Libere and the Tour de France — and will race for no salary or bonuses, the sources, who asked to remain anonymous, told VeloNews.

Armstrong’s manager, Mark Higgins, did not respond to questions. And an Astana spokesman denied the report to The Associated Press. “He is no part of our team,” Astana team press officer Philippe Maertens told The AP in an e-mail. “Team Astana has no plans with him.”

However sources close to the story have told VeloNews that an exclusive article on the matter will be published in an upcoming issue of Vanity Fair, expected later this month. Vanity Fair editors did not respond to requests for comment. ...

The rumor speculates that Armstrong will reunite with former team manager Johan Bruyneel at Team Astana — a viable option given Armstrong’s long-lasting relationships not only with the Belgian director but also Trek, Astana’s bike sponsor.

According to sources, the Texan will post all of his internally tested blood work online, in an attempt to establish complete transparency and prove that he is a clean athlete.