Former Collingwood half-back Heritier Lumumba has taken aim at his former club following a report that revealed systematic racism at the club.

The review was addressed by the Collingwood board yesterday after it was leaked to the Herald Sun, but many believe the clubs response missed the mark.

Eddie McGuire opened the press conference by saying it was "a historic and proud day for the football club" and insisted Collingwood were "not a racist club".

The investigation into the club was commissioned by Collingwood last year after Lumumba publicly slated the club's treatment of him and other indigenous players.

Lumumba said he was nicknamed "chimp" by the club during his tenure at the Holden Centre.

McGuire faced severe criticism after he addressed the media and no one came harder at the outgoing President then Lumumba himself.

The 2010 premiership player took to Twitter to release a statement.

"I'm grateful to all the people who have reached out to me in support - including CFC members and supporters - as well as all those who have challenged the Collingwood Football Club's bizarre response to their own report finding them guilty of systemic racism.

"It was painful to watch the club dig itself deeper into delusion and dishonesty at today's press conference.

"Eddie McGuire's inability to let go of the illusion he's constructed of himself does not serve the Club, the code, or the community. It's a pity his final year looks like it will be marked by yet another self-inflicted racism scandal.

"The report clearly states that during Eddie's tenure as CFC president, the club's racism resulted in โ€œprofound and enduring harmโ€ to many individuals, families, & communities.
"It was disturbing to see how easily Eddie and the CFC board members reduced the severity of this โ€œprofound and enduring harmโ€ to mere โ€˜mishaps' - as if they were talking about spilling tea on a couch rather than being found guilty of years of systemic racism.
"I'll be speaking to media tomorrow to break down the lies and deception, as well as answering questions about the report's findings."
Lumumba declined to take part in the review itself, therefore his individual accusations and claims were not covered in the report.
Lumumba took to the media on Tuesday morning to continue his criticism on his former employers.

โ€œThe report states that when the Collingwood Football Club is confronted with the truth or the facts that pertain to racism and systemic racism, it doubles down, it denies, it doesn't accept responsibility,โ€ Lumumba toldย Radio National.

โ€œIt uses the institutional power to weave a narrative, it has a powerful public relations machine, and it knows that you can use that power to avoid taking accountability for its failings.

โ€œWhat I saw yesterday was a clear case of cowardice, a clear case of a football club that is delusional.

โ€œUnfortunately, in the face of this irrefutable evidence, now, the report, the Collingwood Football Club continues to do what it has always done and that's been to deny to dismiss and to discredit, which is further exacerbating the trauma and the effect of the discrimination that originally happened,โ€ Lumumba said.

Lumumba said while he was happy with the report he believes its impact may be lost due to Collingwood's attempt to cover their tracks on Monday afternoon.

โ€œThe report is accurate and I think Larissa Behrendt did a great job of outlining exactly what the systemic issues are.โ€