Tour de France champion Alberto Contador has reached a preliminary agreement with his Astana team to see out the final year of his contract.

The agreement depends on the team retaining its ProTour license and complying with internal doping controls, the Spaniard revealed in a statement on his official website.

The statement read: "The agreement reached by both sides includes a number of prerequisites in order for Contador to continue with Astana during the 2010 season, essentially, that the team retain its ProTour license and strictly comply with the code of ethics and internal doping control system that will be implemented by the new leadership of the team."

Contador, 26, a two-time Tour de France winner who had also won the Giro d'Italia and Vuelta a Espana, claimed he was impressed by the "high-quality riders" the team has acquired.

The statement said: "Contador decided to fulfil this agreement with Astana once he found that both Yvon Sanquer, the new team manager, and Giuseppe Martinelli, primary sporting director, had ensured the reliability and competitiveness of Astana's new project, since they have managed to gather, despite the short time span, a group of high-quality riders."

Contador will, though, not commit to longer than one year.

"The contract to be signed will be for one year only. Since it is a new project for Astana, Alberto Contador wants to reserve the option to decide about his future in the longer term, and be fully free to choose at the end of 2010," the statement added.