McCartney, who had been a member of the Cats coaching panel since 2000, held the position of assistant coach and development academy director with the Cats and would be joining Essendon as a senior assistant coach to newly appointed senior coach James Hird.
“It was in the Club’s plans for Brendan to become a development coach who would solely focus on developing our younger players however he has now informed us he is looking to pursue a senior match day role instead,” Geelong Cats general manager of football operations Neil Balme said.
“On this basis we have reluctantly accepted Brendan’s decision to resign.”
The Club appreciates the service given by Brendan which saw him be a part of a successful period for the Club including the 2007 and 2009 AFL premierships.