ESPNcricinfo learned the fracture was confirmed on Saturday after Gill attempted a low catch in the slips on the second day of India's simulated training game.

The BCCI has not yet made an official statement on Gill's injury but it is understood that while the fracture is minor, the Gill is racing the clock to be fit for the second Test in Adelaide, a day-night fixture that begins on December 6.

Gill's injury means India will have to adapt to fill gaps in their batting order. There is no certainty yet on India captain Rohit Sharma's availability for the first Test either, after he and his wife Ritika Sajdeh had their second child on Friday. Without Gill and Rohit, India have to find an opening partner for Yashasvi Jaiswal, a new No. 3, and also identify their No. 6.

Abhimanyu landed in Australia on the back of spectacular form in domestic cricket in India, having scored four centuries in as many red-ball games. But his returns dipped on Australian soil as he fetched scores of 0, 17, 7 and 12 against Australia A. He was out to pace bowling three out of four times - twice edging the ball behind and once to a bouncer - and run-out the fourth time.