Adding to Rennie's injury issues, wing James Lowe and midfielder Charlie Ngatai are again unavailable due to shoulder injuries.
Chiefs team to play the Sharks at Yarrow Stadium on Friday, kick-off 7.35pm is: Damian McKenzie, Toni Pulu, Seta Tamanivalu, Anton Lienert-Brown, Sam McNicol, Aaron Cruden (c), Brad Weber, Michael Leitch, Sam Cane (c), Taleni Seu, Brodie Retallick, Dominic Bird, Hiroshi Yamashita, Hika Elliot, Mitchell Graham. Reserves: Nathan Harris, Siate Tokolahi, Kane Hames, James Tucker, Lachlan Boshier, Kayne Hammington, Andrew Horrell, Shaun Stevenson.
Sharks: Willie Le Roux, JP Pietersen, Paul Jordaan, Andre Esterhuizen, Lwazi Mvovo, Garth April, Michael Claassens, Daniel du Preez, Jean-Luc du Preez, Keegan Daniel (C), Stephan Lewies, Etienne Oosthuizen, Lourens Adriaanse, Kyle Cooper, Dale Chadwick. Reserves: Chiliboy Ralepelle, Thomas du Toit, Coenie Oosthuizen, Hyron Andrews, Jean Deysel, Stefan Ungerer, Joe Pietersen, Odwa Ndungane.