Contador suffered a competitive relationship with team mate Armstrong this year [AFP]

The Tour de France champion had threatened to leave Astana and had opened negotiations with several other leading teams, having had contact with Caisse d'Epargne, Quick Step, Garmin-Slipstream and Liquigas.

Despite winning the Tour in July, the Spaniard's year was also marked by delayed wages and a stormy relationship with Astana team mate and seven-time Tour winner Lance Armstrong.

"The agreement depends on Astana retaining their ProTour licence for 2010 and the introduction of an internal anti-doping programme," Contador's press office said.

Confirmation

Although Astana missed one deadline on October 20, the governing International Cycling Union (UCI) is expected to reach a possibly definitive decision on a licence by Friday.

However, Contador's statement from his press office said: "(Contador) has taken the decision to complete his contract with Astana having confirmed that both Yvon Sanquer, the new team manager, and sports director Giuseppe Martinelli guarantee the seriousness and competitiveness of the new Astana project."

"In a short space of time they have managed to bring together a group of riders of great quality with which to tackle the sporting challenges of the next season."

"The duration of the contract will be only one year because, apart from being a new project for Astana, Alberto Contador does not wish to renounce the option of making a decision about his longer term future," added the statement.

Cycling legend Lance Armstrong said in July he was quitting Astana to form a new RadioShack squad in 2010.

The American's long-standing manager Johan Bruyneel and the team's top riders, compatriot Levi Leipheimer and German Andreas Kloden, are set to follow him.