Joel Wilkinson has accused the AFL of systematic racism and claims the league's response to his complaint has been an insult.
Lawyers for the former Gold Coast player will lodge legal papers at the Australian Human Rights Commission on Monday morning and the case could end up in the Federal Court.
A day after Wilkinson's unprecedented legal action was made public, he read from a prepared statement and referred to what he called the "dark works" inside the AFL.
AFL football operations manager Steve Hocking again apologised to Wilkinson on behalf of the league, but said there were processes that the former player could work through.
Wilkinson's lawyer Will Barsby said that two other former AFL players had made contact in the wake of the accusations.
"I am here to hold the AFL accountable and stand against injustice ... this is extremely systematic across the AFL," said Wilkinson, who alleges his career was taken from him and his rights were violated due to racism, religious vilification and racially-motivated sexual harassment over many years.
He was now looking forward to his day in court.
"It won't be happening behind closed doors anymore," said Wilkinson.
"It seems in recent times the dark works on the inside of the AFL are being revealed and I hope this gives others the courage to come forward."
The AFL released a statement on Wednesday saying Wilkinson previously had shared his experiences of racial abuse in videos produced with the league.
"It is disrespectful to the gravity of the situation to continually deny my experiences and claim one three-minute video was sufficient," responded Wilkinson.
"It is an insult that is so out of place in the global climate of racism and in the modern workplace."
Barsby said it was unclear whether the two other former players who had made contact also wanted to take legal action.
"It's really about whether those individuals want to pursue their legal rights, as Mr Wilkinson has," the Shine lawyer said.
Barsby also claimed that Wilkinson lost his place at the Suns because he became too much trouble.
"He was labelled as a grandstander ... like any workplace, sometimes an employer doesn't want to keep that perceived problem child around," Barsby said.
"Joel was very advocating on behalf of his rights and others' rights and he's been persecuted because of that."
Wilkinson only deviated from his statement once, when asked what compensation he wanted.
"Reclaiming my time," was his response.
Wilkinson was racially abused by Western Bulldogs player Justin Sherman during his debut AFL game for Gold Coast in 2011.
The following year, he was racially vilified by a Collingwood supporter during a match.
Wilkinson played 26 matches for the Suns from 2011-13 before being delisted.
Hosking was asked on Thursday whether the AFL's apology to Wilkinson meant they accepted blame and responsibility.
"No, I think that it's understanding and acknowledging the fact that he's clearly felt some personal discomfort at different stages throughout his career and we have to acknowledge that," Hocking said.
"From there, he'll have his due course as far as working through that with the relevant parties."