SOMMA LOMBARDO, Italy (AP) - Alberto Contador said Friday he will quit the Astana cycling team if his leadership is put in doubt by the arrival of seven-time Tour de France champion Lance Armstrong.

Armstrong announced Wednesday he was joining Astana, reuniting him with his friend Johan Bruyneel after three years in retirement. Now Astana’s team director, Bruyneel coached Armstrong during his Tour victories.

"I spoke with Johan about the Tour next year and he said there is no problem and that I will be the leader, but Lance Armstrong is a champion and I think he will want to race to win," Contador told The Associated Press in an interview. "I am sure that he also wants to be the leader of the team."

Contador, winner of the 2007 Tour de France, said he has received offers to sign with other cycling teams, though he is not considering them right now.

"If I am not happy I will change teams," the Spaniard said. "The team has said it has complete confidence in me, but this is a particular situation and I will have to see what happens in the coming weeks to then decide what is best for my future. Four weeks from now the situation could be completely different."

Contador, who is under contract with Astana until 2010, said his main objective for next year’s season is the Tour de France.