"I am able to run hard and my lung capacity is back. The trainers and the support staff at the National Cricket Academy have been working hard on my fitness. In a week, I will be completely ready."

His family revealed in November that the all-rounder had been battling a golf-ball sized non-malignant lung tumour which first affected him during India's triumphant World Cup campaign.

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Yuvraj, 30, was declared man of the tournament after the World Cup win at home in April for scoring 362 runs and grabbing 15 wickets in nine matches.

The World Cup star played in two of the three home Tests against the West Indies in November but was not picked for the ongoing four-Test series in Australia.

India will play two Twenty20 matches against Australia before the triangular one-day series, also featuring Sri Lanka, starts in Melbourne in February.

Mahendra Singh Dhoni's Indians are currently trailing 2-0 in the Test series, but Yuvraj said they could bounce back.

"Virender Sehwag has struggled to give good starts. But I am hopeful that the team will stage a fightback. You also have to give credit to the Aussies -- the way they have played in the series so far."