Leslie Charles Cobby, 46, was initially charged with wounding a person with intent to cause grievous bodily harm, after he allegedly glassed Superintendent Peter McKenna at a pub on Brisbane Street on June 18.

It's believed the incident occurred while police were gathering following the funeral of an ex-police officer, who died after a battle with post traumatic stress disorder.

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Mr McKenna was treated at the scene and later underwent surgery to repair injuries to his face, obtained as a result of the incident.

In court documents, police claimed the glassing was unprovoked, witnessed by numerous people and captured on CCTV.

In Dubbo Local Court on Thursday, defence lawyer Jai Silkman told the court Cobby had made a plea offer to prosecutors, and the original charge would be withdrawn and replaced with reckless wounding.

Mr Silkman said it would take "a couple of weeks to settle facts" but the case would remain in the Local Court.

Magistrate Gary Wilson adjourned the matter to December 2, when a plea is expected to be entered.