Chris Froome has been confirmed for Team Sky's Vuelta a España roster.

The two times Tour de France winner confirmed his selection on Twitter for the event, which will see teams ride 21 stages between 22 August and 13 September. 

Speculations are that Sky teammate Geraint Thomas will feature in the race after a strong Tour de France last month.

An official announcement of Team Sky's full line up is expected imminently. Team Sky has been contacted for comment.

GC contenders Vincenzo Nibali (Astana), Nairo Quintana (Movistar) and Tejay van Garderen (BMC Racing) are all confirmed to race the Vuelta.

Sky responded to a request for comment to say the nine-man Vuelta squad has not yet been confirmed.