All Blacks lock Ali Williams will undergo surgery on a knee injury that's flared up in the second test victory over Ireland.
Coach Steve Hansen says it's not a major concern, but they want to get the issue sorted now so he can play in the Rugby Championship, which starts in August.
"He's got some articular cartilage damage on his right knee which has been causing him some problems. It's got to the point now where we just think he's better to get it operated on. He'll be six to eight weeks minimum."
Hansen says they'll bring Liam Messam into the squad, and use locking cover from within the current group.
Kieran Read's head knock will be assessed as a day by day prospect for the third test, though hooker Keven Mealamu is available after sitting out the first two games.
Photo: Ali Williams and Tony Woodcock after the first test against Ireland (Photosport)