Stuart Barnes says the All Blacks captain should be replaced by Ardie Savea before next year's World Cup.
The veteran pivot left the field early in the first-test defeat at Eden Park.
Sam Whitelock and Tupou Vaa'i have both been ruled out of the Dunedin test on Saturday.
He joins Stephen Perofeta, Caleb Clarke and Hoskins Sotutu in recommitting to the Super Rugby side.
The self-confessed All Blacks fan is a likely replacement for an injured Johnny Sexton.
The All Blacks first-five made his debut against Ireland at home 10 years ago.
The Auckland venue remains an impenetrable fortress for visiting rugby teams to New Zealand.
Fullback Damian Willemse slotted the kick after the fulltime hooter to snatch the win.
First-five Quade Cooper was forced to withdraw before kickoff with a calf strain.
