The Cycling greats Alberto Contador and Lance Armstrong, who is to bid for his eighth Tour de France title next year, will train together for the first time on Thursday.
Seven-time Tour de France winner Armstrong announced his comeback to cycling after a three-year hiatus earlier this year.
Astana announced earlier this week that the 37-year-old Texan would race the Tour de France in 2009, having originally implied his focus would be on a maiden Tour of Italy instead.
But there have been questions raised over the American's place in the Astana team alongside Contador, who was Tour de France winner in 2007.
Contador, had hinted he may quit Astana following the signing of Armstrong but later said he had been given assurances that he would remain team leader.
