The Lions have named a strong squad to tour Australasia with captain Whiteley back fit again to lead the team.
Nic Groom, who has joined the Lions will also make the tour.
The Lions will face the Waratahs (Sydney, April 20), Reds (Brisbane, April 28), Hurricanes (Wellington, May 5) and Highlanders (Dunedin, May 12).
Regular scrumhalf Ross Cronje is still sidelined with a rib injury and will miss the tour, along with promising winger Aphiwe Dyantyi, who is struggling with a pectoral muscle injury.
Lions touring squad: Jacobie Adriaanse, Cyle Brink, Andries Coetzee, Robbie Coetzee, Ruan Combrinck, Ashlon Davids, Hacjivah Dayimani, Ruan Dreyer, Lourens Erasmus, Andries Ferreira, Nic Groom, Rohan Janse van Rensburg, Elton Jantjies, Johannes Jonker, Sylvian Mahuza, Lionel Mapoe, Malcolm Marx, Francois Mostert, Marvin Orie, Marnus Schoeman, Dillon Smit, Dylan Smith, Kwagga Smith, Madosh Tambwe, Jacques Van Rooyen, Harold Vorster, Warren Whiteley