Scott Robertson will join Ronan O'Gara in coaching the Barbarians against an All Blacks XV, as the Crusaders boss continues to be linked with the New Zealand top job.
The Barbarians game will be played at the Tottenham Hotspur Stadium in London on November 13 as the teams battle for the Killik Cup.
Robertson has been strongly linked with the New Zealand national side as speculation surrounds head coach Ian Foster's future, after a 32-22 defeat to Ireland condemned the All Blacks to a first home series defeat in 28 years.
Former New Zealand Under-20 team coach Robertson is reportedly in the running to take over if Foster does indeed lose his job.
Welcoming his appointment for the All Blacks XV fixture, Robertson told the Barbarians' official website: "Rugby throws you great opportunities and coaching the Baa-baas has to be one of the best there is.
"I am proud to help the incredible club and add to its history."
The series defeat to Ireland could also be the last act of New Zealand captain Sam Cane's tenure, with reports stating he could be replaced by Sam Whitelock ahead of the series in South Africa next month.
Cane took the job in 2020, succeeding Kieran Read, but could be losing the armband after just 13 Tests.