a few years in the books that I win the Tour, it is not like it will be a victory."

Contador, who won for the Kazakh-backed Astana team before signing with the Saxo Bank-SunGard team, has threatened to quit the sport regardless of the decision.

"The more time this takes the worst this is for everyone," Castano said, "and I think we've done a lot of damage to cycling during this time."

Spanish cyclists Ezequiel Mosquera and David Garcia are also being investigated after positive doping tests at this year's Vuelta a Espana.