New Zealand Rugby and the Blues confirmed on Saturday the captain of the Warriors rugby league side had signed a two-year contract through to the end of 2023.
The announcment also confirmed Tuivasa-Sheck would play NPC rugby for Auckland, joining the team "later this year" before starting with the Blues ahead of the 2022 Super Rugby season.
The NPC was scheduled to run from September 11 to November 27, with the Warriors NRL regular season campaign set to finish on September 9 and the Grand Final to be held on October 3.