The Test future of Wallabies veteran Joe Roff remained up in the air after he underwent an arthroscope, but there was better news for backline colleague Stirling Mortlock.

Roff required surgery after injuring his right knee in last Saturday's 29-14 win over the Pacific Islanders.

It was confirmed the backline utility would be sidelined for a minimum of six weeks, which could effectively prevent him adding to his 86 Tests for Australia.

The 28-year-old has already declared he will retire from international rugby at the end of this season.

At best, Roff would probably only be available for Australia's final Tri Nations match on August 21 against South Africa in Durban.

There was happier news on the fitness front for Australian coach Eddie Jones with first-choice outside centre Mortlock and reserve prop Matt Dunning cleared to resume training later this week.

Both men suffered facial injuries with Mortlock hurt in last Saturday's match while Dunning had earlier been ruled out of that fixture.

"Stirling and Matt have both been cleared to train and we'll just ease them back into it this week," said Jones.

"They will both be considered for selection for the opening Tri Nations Test in New Zealand on Saturday week.

"As for Joe Roff, we'll know more later in the week, but he is definitely out for the next six weeks."

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