A lack of match fitness means Kieran Read is a doubt for next Saturday's test against England in Dunedin.
All Blacks coach Steve Hansen today hinted he could take a cautious approch to the return of the No8, who has played only once since suffering his concussion while playing for the Crusaders against the Chiefs in April.
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"Kieran trained for an hour and a half yesterday with no signs or symptoms," Hansen said.
"It's just a matter of the lack of games, whether we chuck him back in or whether we do the safer thing and give him a week's training and build him up and save him for the last test.