AUCKLAND - Chiefs prop Ben Afeaki is returning early from South Africa after another head injury.
The 26-year-old one-Test All Black was a late withdrawal from the draw with the Bulls in Pretoria last weekend, after suffering a knock in training.
Assistant coach Tom Coventry says the Chiefs are putting the player's health first.
In the Chiefs' season-opening match against the Crusaders in February, Afeaki was involved in a nasty head clash with teammate Brodie Retallick.
Coventry says some of the concussion symptoms that had cleared after that incident had returned.
Wider training squad member Nick Barrett will replace Afeaki in the tour party.
The Chiefs face the Cheetahs in Bloemfontein this weekend.