A combination of brilliant death bowling and sparkling effort in the field helped India restrict the visitors to a below-par total of 118 for the loss of 8 wickets.
If he is absent for the match with India, vice-captain David Warner is likely to deputise in the skipper's role. But soon, in-form Finch and Glenn Maxwell (17) stabilised the Australian innings and forged a 47-run partnership for the second wicket.
Behrendorff will become Australia's 88th Twenty20 global player for the match at the JSCA Stadium, while David Warner will captain the side in the absence of injured skipper Steve Smith. Even as the mercurial all-rounder struggled to get going, Finch was blazing away at the other end. Finch scored 250 runs in three innings while Warner made 245 runs from five outings in the just-concluded ODI series.
Australian captain Steve Smith will return home before the start of the T20I series against India after failing to recover from a shoulder injury.
Australia could be without captain Steve Smith for the opening Twenty20 meeting with India on Saturday due to injury.
The return of the 38-year-old Nehra will be a key factor for India as the left-arm pacer would add variety to the pace attack of Bhuvneshwar Kumar and Jasprit Bumrah. Meanwhile, Yuzvendra Chahal, Kuldeep Yadav and Axar Patel will take care of spin-bowling department. Skipper Kohli, Manish Pandey, Kedar Jadhav, MS Dhoni and Hardik Pandya are expected to be a part of the middle order.
Comprehensive winners in the ODIs, India would aim to extend the domination, while Australia's listless team would be eyeing a change of fortunes in the three-match T20 series beginning today in Ranchi.
Australia meanwhile recalled their T20I specialists Moises Henriques, Daniel Christian, Andrew Tye and Glenn Maxwell. He, along with Nathan Coulter-Nile - the leading wicket-taker in the ODI series - form Australia's pace battery.