North Melbourne assistant coach Brad Green has left the Roos after two seasons under Brad Scott.

Green, who played 254 games for Melbourne over a 13-year career, was in charge of the club's defensive group for the past two seasons, and was an important member of the coaching staff who helped the club reach the 2016 finals.

“Brad has been a great support to Brad Scott and the players since joining us from Carlton,” North Melbourne's General Manager of Football Cameron Joyce told nmfc.com.au.

“He is a quality person with a tremendous amount of football knowledge after spending almost 20 years at the highest level as a player and assistant coach.”

The Roos have also said goodbye to part-time ruck coach and former player Alex Ishchenko, who has left North Melbourne to focus on a career outside of football.

Ishchenko played 70 games for the club from 1992-1995, and current ruckman Todd Goldstein thanked the Western Australian for guiding him throughout his career.

“I’m indebted to Alex and the work he’s done with me over the journey,” Goldstein told the club's website.

“His experience and knowledge of the ruck craft and the game has been invaluable.

“He’s helped me through so many periods in my career since becoming ruck coach in 2010 and I’m sad to see him go.”