All Blacks winger Will Jordan won't join the side on their northern tour, as he battles a vestibular inner ear problem.
Jordan, 24, stayed at home in New Zealand as the All Blacks departed for Japan late last month, in the hope that he'd recover to join the team in Europe for tests against Wales, Scotland and Ireland.
But the prognosis of the condition hasn't been kind to Jordan, leaving the All Blacks coaches and selectors no other option but to scratch the winger for the final three tests of the year.
"It's over," Foster said. "He's dealing with a vestibular issue that's not progressing fast.
"Rather than him or us having any pressure around his return to play it's just better making an early decision and just let him chill out and come right and come back firing next year."
In Jordan's place, Sevu Reece has been given the nod to start Sunday's test against Wales on the right wing, filling in for his Crusaders teammate.
Despite his success at fullback for the Crusaders, Jordan has been a revelation for the All Blacks on the right wing.
In 21 tests, Jordan has scored 21 tries for 105 points, as one of few shining lights in a team that's struggled in 2021.
But now he'll have to wait until next season at the earliest to continue his rise as the All Blacks' premier No.14, with the Rugby World Cup in France the standout on the calendar in the coming year.
The vestibular condition Jordan is battling can cause vertigo, dizziness, issues with balance and nausea to those it affects.