Long-term Essendon member Brett Crabtree will follow through on his threat to challenge the Bombers board after James Hird was overlooked for the senior coaching position, which was won by Mark McVeigh.
Crabtree has been vocal about his desire, supported by a number of Essendon fans, to see Hird return to the club as senior coach.
The 33-year member has acknowledged McVeigh's appointment, but has vowed to take "appropriate action to restore relevancy to our once great club".
"We were prepared for this outcome," the LinkedIn post read.
"This is not about who was appointed coach, and we congratulate Mark McVeigh; he will get all the support he needs. This is about decades-long failures at every level, accentuated by an inept process to find the best person to coach the club.
"However, this is something that needs to be done properly. There is a formal process that must be followed, and we are making sure every step is undertaken correctly, within the Club's constitution and with the appropriate level of member support.
"This is not about rushing, grandstanding or creating unnecessary noise. It is about making sure the members' concerns are formally and properly heard.
"There is a lot happening behind the scenes, and we will provide members with further information when we are in a position to do so.
"The objective is clear: accountability, proper governance and putting the future of the Essendon Football Club first."
McVeigh was officially unveiled as Essendon coach on Monday for the next three years, beating out Hird as well as Jaymie Graham and Murray Davis.
