Floyd Landis claims his appeal against a positive drugs test in the Tour de France will ultimately be successful.
Landis wants USADA to dismiss his test findings as flawed
The American won this year's title, but tests revealed irregularly high amounts of testosterone in his body.
Landis, speaking to Spanish daily Marca in Madrid, said: "The Tour's doping tests are full of irregularities."
"I'm innocent and I think my lawyers are going to be able to prove it, though they've had lots of difficulties gathering information."
Landis was in the Spanish capital to support his former Phonak team-mates on the final day of the Tour of Spain.
"I have come to talk with my lawyers and also to say goodbye to my colleagues and helpers in Phonak, given the fact that after the Tour I hardly had time to do so," he said.
Last week, Landis's lawyer sent a letter to the US Anti-Doping Agency (USADA) asking that the doping charges be dismissed.
The letter claimed that the positive finding on the B sample came from a sample number not assigned to Landis.
USADA's review board is expected to issue a recommendation on Landis' case sometime next week.
If sanctions are imposed, Landis is expected to appeal and ask for a public arbitration hearing.