Stormers duo Damian de Allende and Rynhardt Elstadt have both returned to full training, but Dillyn Leyds' season is over.
De Allende and Elstadt will now be considered for selection in the Stormers next Super Rugby game against the Sunwolves at Newlands on Friday, April 8.
Scrum-half Jano Vermaak suffered a neck disc injury in the game against the Sharks which was was worse than the specialist initially suspected. He went for surgery last week and will be out of action for three months.
Dillyn Leyds did not travel with the squad to Argentina after picking up a non-contact knee injury at training on Tuesday. He tore his ACL which will require surgery that will sideline him for about nine months.
Full-back Cheslin Kolbe sustained concussion in the 13-8 victory over the Jaguares in Argentina and will be reassessed later in the week.