Wales may be spared the prospect of facing giant Wallaby Wendell Sailor after the wing was forced out of the game against Ireland early with a rib injury.
The former rugby league star went off after an hour of Saturday's success and the Wallaby management insisted he will not be risked against Wales if he is not fully fit.
However another former rugby league star Matt Rogers came though his comeback game from injury for club side Southern Districts over the weekend and is expected to be back in the frame for the Sydney clash.
Meanwhile, Test veteran Matt Burke was also set to join the Australia squad today after sitting out the Ireland game with a knee injury.
The 68-times capped full-back, who has scored 833 points in Test rugby, has been troubled by a medial ligaments problem but will be given his chance this week to prove his fitness in time for Saturday.
GB7s women left their England base to train in Wales this week. Olympic Games hopeful Rachael Burford gives WRU TV's Graeme Gillespie her thoughts on Welsh teammate Jasmine Joyce - a 'one touch wonder'
The GB7s women's squad is currently training at Wales' Centre of Excellence where assistant coach Richie Pugh tells WRU TV's Graeme Gillespie some 'tough calls' will have to be made when it comes to finalising the 12 spots for Rio's Olympic Games.
Wales U20's Billy McBryde is looking forward to starting his first game against New Zealand this afternoon in the World Rugby U20 Championship where his side are looking to gain revenge from last week's pool defeat to the Kiwis.