With Read, Whitelock and Cane expected to sign on for the next World Cup that would give the All Blacks a strong nucleus of 13 players on the books for the back-to-back-back attempt in Japan.
The backline in 2019 could feature Aaron Smith, Beauden Barrett, Sonny Bill Williams, Nehe Milner-Skudder, Julian Savea and Ben Smith who have all signed on.
While forwards Dane Coles, Owen Franks, Joe Moody and Brodie Retallick should be there, along with Read, Whitelock and Cane. That's a midfield player and a loose forward away from a pretty formidable XV - and doesn't consider the latest generation of young players coming through like Ardie Savea, Anton Lienert-Brown, Rieko Ioane, Jordie Barrett, Codie Taylor and Damian McKenzie who could all sign longer deals over the two years.
Under contract
2017
Sam Whitelock
Kieran Read
Sam Cane
Ryan Crotty
Israel Dagg
Malakai Fekitoa
Rieko Ioane
Tawera Kerr-Barlow
Anton Lienert-Brown
Steven Luatua
Waisake Naholo
TJ Perenara
Seta Tamanivalu
Codie Taylor
Matt Todd
Ofa Tu'ungafasi
2018
Jordie Barrett
Wyatt Crockett
Jerome Kaino
Damian McKenzie
Charlie Ngatai
Luke Romano
Ardie Savea
Lima Sopoaga
2019
Beauden Barrett
Dane Coles
Owen Franks
Nehe Milner-Skudder
Joe Moody
Brodie Retallick
Julian Savea
Aaron Smith
Sonny Bill Williams
2020
Ben Smith