Rising Springbok star Sacha Feinberg-Mngomezulu is set to go under the knife for knee surgery, sidelining him for several weeks.
Ahead of their crucial opening match against Argentina, Springbok forward Kwagga Smith has warned his teammates not to take the threat the South Americans pose lightly.
The Springboks arrived in Argentina late on Saturday night and began preparations for their Rugby Championship clash against Los Pumas at Estadio Unico Madre Ciudades in Santiago del Estero.
Morne van den Berg has been called up as an injury replacement for Grant Williams ahead of next week's penultimate Rugby Championship clash against Argentina in Santiago.
Australia's 67-27 Rugby Championship loss to Argentina was the most points they have conceded in a Test, passing the 61-22 hammering they copped in South Africa in 1997.
Rassie Erasmus has named a 28-man squad for the Springboks' one-off Rugby Championship clash against Argentina in Santiago next week.