Bryan Habana will play again for the Stormers at the end of the month but fellow wing Gerhard van den Heever is out for at least two weeks.
Van den Heever hurt his knee in the 19-14 defeat against the Crusaders and will be out for at least two weeks. He will miss this weekend’s match against the Cheetahs and the return match against the Sharks at Newlands.
His fitness to tour will then be assessed.
Rynhardt Elstadt will also miss the Cheetahs game because of a shoulder injury.
Lock Eben Etzebeth and hooker Scarra Ntubeni are expected to tour.
There are also injury concerns to flyhalf Elton Jantjies and centre Juan de Jongh but the Stormers coaching staff remain confident both will be available for selection.
Former Lions lock/flank Michael Rhodes is back and will replace Elstadt at flank.