They've also written to members to quash concerns over the $32 million redevelopment of Deakin Stadium.

The Canberra Times revealed the ACT government and ACT Policing were investigating the fact the club, which plays as Canberra FC in the Capital Football premier league, failed to benefit financially from the redevelopment.

An extensive investigation of the club's finances showed their bank balance didn't change despite 52 units being built on their land.

It's estimated the initial market value of the units was worth at least $32 million, using records of initial sale values.

The club has since begun disciplinary proceedings against Stan Dukic and want to expel him from the club.

He's a former Croatia Deakin player and also played for the Canberra Cosmos in the now defunct National Soccer League.

Croatia Deakin alleged he published "false allegations" about the club on social media, including comments about the stadium redevelopment.

The club board invited Dukic to a disciplinary meeting on Monday night, but he was unable to attend and asked for it to be deferred.

Croatia Deakin secretary Tony Pratezina refused to comment about whether the meeting went ahead in Dukic's absence or, if it did, what the outcome was.

Club president Ivan Bulum wrote to Dukic informing him of the action.

The letter said they'd sent Dukic a concerns notice in 2018 demanding he take down alleged "defamatory publications".

Croatia Deakin's constitution states a member can either speak at their hearing or submit written representations, but doesn't outline what happens if they ask for a postponement.

"You have published false allegations to your followers on social media including Facebook, which are defamatory to the club," Bulum wrote.

"These publications have caused and are causing damage to the club's reputation."

Pratezina wrote to members telling them the club was unaware of any investigations into their Deakin Stadium redevelopment.

Both the ACT government and ACT Policing confirmed to The Canberra Times they were investigating the matter.

"We are confident that all matters relating to that sale were conducted appropriately and any suggestion otherwise is false and mischievous," Pratezina wrote.

He also said a petition against the deconcessionalisation of the lease of the club's licensed club "deliberately misrepresents" the purpose of the amendment.

They want the change so a licensed restaurant can sublet part of their building.

The letter said it was "Zac Barac and Stan Dukic's" petition, but Dukic wasn't involved - it was actually started by Croatia Deakin life members Barac and Dom Kraljevic.

They're part of a group of members concerned the club wants to develop and sell off the licensed club - a claim the club has dismissed.

"We are deeply dismayed by the ongoing campaign by a couple of members to bring our club into disrepute and we are taking steps to address their actions," Pratezina wrote.

Meanwhile, the Deakin Residents Association have voiced their concern about the communications tower that has been built at Deakin Stadium.

Croatia Deakin had their lease on the ground deconcessionalised so they could build the tower to have an ongoing revenue stream.

The association was concerned about it's size, labelling it an "eyesore" and "unacceptable visual pollution".