Joel Cooney, who owns and runs Crown Street's Ron De Vu, stands accused of headbutting and punching the alleged victim during the violent incident, which occurred just after 10pm on November 5.

A police statement released on Tuesday morning said officers were called to a licensed premises on Crown Street in Wollongong following reports of a brawl.

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"Officers from Wollongong Police District attended and responded to a number of people allegedly fighting on the street," the statement said.

"A crime scene was established and an investigation commenced."

Police subsequently issued Cooney with a future court attendance notice in July this year for charges of assault occasioning actual bodily harm and affray.

"It's alleged the man, who was working at the premises at the time of the incident, headbutted and punched a member of the public following a verbal altercation," police said.

Cooney is already on bail over unrelated domestic violence charges amid allegations he savagely attacking his ex-partner in January this year after discovering text messages from another male on her mobile phone.

The fresh charges were briefly mentioned at Wollongong Local Court on Tuesday morning, however Cooney was not required to attend in person, having already had his original bail altered to allow him to attend a rehabilitation centre in Queensland.

Cooney's lawyer entered a plea of not guilty on his client's behalf and had the case adjourned to next month for police to begin serving their brief of evidence.

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