Erasmus was in the role prior to Nienaber's appointment and comes back in to take the world to the 2027 Rugby World Cup in Australia, while Nienaber has left the hotseat to assume the reins at Irish club Leinster.
Some thought Erasmus may be joining Nienaber in the Emerald Isle, but this was quickly rebuffed by Erasmus, who will combine his role as Springbok Director of Rugby and head coach.
A high-ranking official within SA Rugby who wished to remain anonymous, told AFP: "I can confirm that Rassie Erasmus will combine his duties as director of rugby with that of Springbok coach."
Rassie then admitted the side may be a 'bit thin' at hooker and lock with a view to the global showpiece Down Under in 2027.
Etzebeth, Franco Mostert and bongi Mbonabi will be 36 in 2027, while the Munster duo of Jean Kleyn (34 in 2027) and RG Snyman (who will turn 32) will both also be in their thirties. Malcolm Marx will be 33.
Eben is so athletic, but I dont know if he still has a World Cup in him, said Erasmus. We may also be a bit thin at hooker.