Nic Groom will make his debut for the Lions this weekend when the face the Warratahs on Friday.
Groom who played for the Stormers at Super Rugby level before moving to Northampton have impresses in the Premiership the last two years.
With Whiteley out injured again Franco Mostert will captain the side again from lock.
Lions: 15 Andries Coetzee, 14 Ruan Combrinck, 13 Lionel Mapoe, 12 Harold Vorster, 11 Madosh Tambwe, 10 Elton Jantjies, 9 Dillon Smit, 8 Hacjivah Dayimani, 7 Franco Mostert (c), 6 Kwagga Smith, 5 Marvin Orie, 4 Andries Ferreira, 3 Ruan Dreyer, 2 Malcolm Marx, 1 Jacques van Rooyen.
Replacements: 16 Robbie Coetzee, 17 Dylan Smith, 18 Jacobie Adriaanse, 19 Lourens Erasmus, 20 Marnus Schoeman, 21 Nic Groom, 22 Rohan Janse van Rensburg, 23 Sylvian Mahuza