The Australian and South African camps are talking up the prospect of another fiery encounter in the third Test beginning on Monday, with opener Justin Langer making no apologies for Australia's aggressive appealing.

South Africa coach Mickey Arthur has accused Australian leg-spinner Shane Warne of putting pressure on umpires with his "histrionics", while ICC match referee Chris Broad says Warne is "pushing the line".

But Langer says with the turning SCG deck certain to suit Australia's leg-spin duo of Warne and Stuart MacGill, it's going to be another five-day epic of constant appealing.

South Africa is also leaning towards playing two spinners in the match, having flown 23-year-old off-spinner Johan Botha out for a possible Test debut alongside left-armer Nicky Boje.

"Potentially it (the Sydney Test) will be the same sort of environment," said Langer, who is likely to return from a hamstring injury after missing Australia's 184-run win in the second Test which finished in Melbourne on Friday.

"There's men around the bat, there's going to be more potential opportunities to get batsmen out, whether it's lbw, whether it's bat-pad, decisions which are often borderline decisions.

"So potentially there's going to be a lot of that."

Australia, which leads the series 1-0, will train at the SCG nets while the Proteas will also have a final tune-up.

Fiery paceman Andre Nel is set to be promoted to new-ball duties with Shaun Pollock after No.1 strike bowler Makhaya Ntini broke down in the second Test with a knee injury.

Nel says the tourists will aim to copy Warne's aggressive body language.

"They put a lot of pressure on the umpires and sometimes it counts in their favour," Nel said.

"Maybe we can learn something from them in a certain way by doing this.

"But sometimes they go a bit overboard and it gets a bit annoying, but that's the way they do it and it's working for them."

Brought to you by AAP © 2024 AAP