Alberto Contador, who has ridden to the last two Tour de France championships as a member of the Astana Cycling Team, may be leaving Astana.

Contador, 28, from Spain, issued a statement saying he was going to "explore all possibilities" following a request for a decision regarding a contract extension offered by Astana.

Contador was a member of the Discovery Channel team when he won the 2007 Tour de France. He joined Astana in 2008 and won the Tour de France in 2009 and 2010.

He wrapped up the 2010 tour title Sunday, finishing 39 seconds ahead of Andy Schleck in the overall standings.

Other important race victories have come in the 2008 Vuelta a Espana and the 2008 Giro d'Italia. He is a three-time (2007-09) winner of the Velo d'Or award given by Velo magazine to the year's top rider.

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