Rhys and Ryan Williams are poised to become the sixth pair of Socceroos brothers that have donned the green and gold with Ryan eyeing his debut against Korea Republic.
The younger Williams' brother has had a strong season in the Championship with Rotherham where he made 39 league appearances scoring one goal and adding two assists.
At 25, Ryan has previously played for Australia's U20 and U23's but is yet to to play for the Socceroos.
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Older brother Rhys is no stranger to the green and gold with 14 appearances to his name but the 30-year-old's last appearance was all the way back in 2013 thanks to a poor run of injuries.