Pat Lambie has been cleared to play for the Springboks and will be considered for the Test against Australia in Pretoria on Saturday.
Coach Allister Coetzee confirmed the news at a press conference on Monday and said there would be changes to the team who lost 41-13 to New Zealand last week.
Willie le Roux is another player who is back in the squad and could be considered at full-back. Coetzee said Le Roux is relaxed and in good shape after returning from Japan.
Former Springbok fly-half Louis Koen has linked up with the squad as he resumes his duties as kicking coach and Coetzee said the Boks would benefit from his input.
South Africa's tactical kicking has been poor in the Rugby Championship so far and the hope is that Koen can help the team improve that area of their game.
Lambie was out for three months after suffering a concussion in the first Test against Ireland in June and suffered from a low-grade migrain for during that time which ruled him out of action until now.
Coetzee said there are no injury concerns this week except for Bryan Habana who is suffering from gastro.