How Australia can unlock young gun Cameron Green's potential with the ball

Cricket icon Shane Warne has urged Australian skipper Tim Paine to develop a more defined role for young all-rounder Cameron Green with the ball.

Despite coming into this Test series with a handy first class record, Green is yet to pick up a wicket in the two Test matches.

According to Warne, Green's lengths have been off and he urged the young gun to consult his captain on where he fits alongside Pat Cummins, Mitchell Starc and Josh Hazlewood.

"I think for him to have success at international level with the ball - he's only going to bowl eight to 10 overs an innings, maybe a bit more occasionally," Warne said on commentary for Fox Cricket.

"He and Tim Paine have to work out his role in the side. Is it to come on and bowl and try bounce people out? I think he's a bit better than that. I think he should use his height.

"If he uses his height and bowls good, relentless line and length with the odd short one and yorker to just back up the Cummins, Hazlewood and Starc line, just back those guys up with some pressure-building bowling, I think it might help his cause and the team's cause a bit more."

Former Australian leg-spinner Kerry O'Keefe added that Green looked to be uncomfortable with how to use his hulking 200-centimetre frame.

"I don't think he's really comfortable with his 200 centimetre height. I don't think he's found the length he has to bowl at 200 centimetres," O'Keefe said.

"I don't think in the field when he's in the gully that he gets low enough for the low catches. He's so young, he hasn't quite found a cricket game that matches how tall he is. He will in time, of course."