Tour de France-Vuelta a Espana double 'on the cards' - Chris Froome

Having twice finished second at Spain's Grand Tour, including last year, Froome has good form in the Vuelta.

But the 30-year-old Team Sky rider would need to defy history if he was to win the red jersey, as only two cyclists have previously won the Tour-Vuelta double - Jacques Anquetil in 1963 and Bernard Hinault in 1978.

The 2015 Vuelta starts on August 22.

"I would say it's a bit early to say 100 per cent but I think that could potentially be on the cards, certainly," Froome said on Monday.

"I know it would be a massive challenge to back it up with another Grand Tour now, especially to go there with the aim of going for the general classification again. But yeah, that's at the back of the mind and maybe that could be on the cards."

Sky general manager Dave Brailsford attempted to dampen expectations, however, with the 51-year-old claiming Froome should only be focusing on rest and recovery just a day after triumphing in Paris.

"The reality is you never know how the guys are going to come out of three weeks of racing," Brailsford said.

"You need to have a couple of days to calibrate and see where you are.

"They need to just relax, take time and feel good about what they've just done. He's the first British guy ever to win two Tours, it's incredible what he's done, and I don't think we should be encouraging him to look ahead at the minute."

Tinkoff-Saxo's Alberto Contador attempted the Giro d'Italia-Tour double this year but while the 32-year-old Spaniard won in Italy, he was never truly in contention for the yellow jersey in France, eventually finishing fifth overall - nine minutes, 48 seconds adrift of Froome.