3. Jason Akermanis / Western Bulldogs
You could always trust Jason Akermanis to make a headline, and his feud with the Western Bulldogs in 2010 led to his eventual sacking.
Akermanis was a colourful character - he wrote strong opinion pieces in the newspaper, had bleached blonde hair and did handstands after games. And the Bulldogs did not like it, wanting him to be more in line with team culture.
Akermanis was suspended for writing a contentious article encouraging gay footballers to stay in the closest and got called out in front of the playing group during a private meeting. His relationship with the club had become toxic and after refusing club's power brokers advisement to retire, the triple-premiership Lion was let go.
Whilst the Carey / Stevens situation was ugly and involved the AFL’s highest profile player it occurred in the off-season and the 2 never played for the same team again so it was hardly a long running feud within the confines of the club. i’m surprised you never included the likes of Andrew McLeod / Tyson Edwards and Gary / Steven Hocking. Both combinations played 200+ games in the same team and rarely spoke to each other and had major personal disagreements with each other.