Spanish tennis superstar Rafael Nadal, out of action since June, will resume training in two weeks with the aim of playing in the ATP Tour Finals and the Davis Cup final, his uncle has told Fox Sports television channel.

"In 15 days, Rafa will resume training, in time for him to aim to play in the Masters and the final of the Davis Cup," said Toni Nadal, as reported by the Twitter feed of Central Fox, the Latin American branch of Fox Sports.

Nadal, the former world No.1, has not played a competitive match since his shock loss to unseeded Czech Lukas Rosol in the second round at Wimbledon on June 28.

The 26-year-old Mallorcan has been suffering with Hoffa syndrome, an inflammation of the fatty tissue situated behind the kneecap in his left knee.

He declared in late September that he would not return to the circuit until he was 100 per cent fit.

Nadal missed the London Olympics and the US Open, but hopes to be fit in time for the ATP Tour Finals in London, which run from November 5-12, and the Davis Cup final on November 16-18, in which Spain will defend their title against the Czech Republic in Prague.

Both events will take place on hard courts, which are more likely to aggravate existing injuries than Nadal's preferred surface, clay.