Injuries to Michael Beauchamp (ankle), Josh Kennedy (back) and Harry Kewell (groin) have prevented the trio from joining the Socceroos squad for the coming international friendly matches against Switzerland and Poland.
Coach Holger Osieck consulted with the players and their clubs and decided they would not be required in camp this week, FFA said in a statement on Monday.
Osieck added Jon McKain and Tommy Oar to the squad and will decide later whether to call in a third replacement.
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The Socceroos will assemble in St Gallen, Switzerland, on Tuesday for their first official training session under the new coach.
