Tana Umaga is stepping down as Blues head coach.
Leon MacDonald will replace him as head coach with Umaga staying on as defensive coach for the next two years.
The Blues announced in May that Umaga's contract had been extended into a fourth year. MacDonald will take the role on as part of a three-year deal.
MacDonald will retain the attack portfolio alongside Tom Coventry as the forwards coach and Daniel Halangahu as the skills and back coach.
Umaga has coached the Blues for the past three years, during which the franchise has finished 11th, ninth and 14th.