The Western Australia all-rounder is part of the limited-overs squad to face India.
Green, whose consistent first-class batting performances have also earned him a maiden Test call-up for the Border-Gavaskar Trophy, has just resumed bowling after a lay-off. But as he comes in place for an injured Mitchell Marsh, the Australian team will want Green to be providing some useful overs in order to maintain their balance.
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"In one-day cricket, he'll only play if he can bowl a few overs because that's how we'll set up the team," Langer was quoted as saying by cricket.com.au.
"He hasn't had the white-ball experience to come in as a pure batsman but if he can bowl a few overs, my gosh he becomes a good prospect."
"But Test cricket is different. He's earned the right to play Test cricket on his batting. I love watching him bat. For such a tall batsman, he's got so much time," the coach added.
Green is rated very highly within the Australian circuit. Former skipper Greg Chappell recently deemed the 21-year-old as the best batting talent he has seen since Ricky Ponting.
While obviously desperate to play, Green said he'll aim to learn as much as possible from being around the squad if he doesn't get the nod in the playing XI.
"The results I've had in four-day cricket are definitely a lot better than what I have shown in T20s. If I don't play, I'll get a lot of experience and hopefully take a lot out of it," he said.
"There's probably no better place to keep learning and evolving your game than around world-class coaches and players," Green added.
(Inputs from PTI)