A Denver police corporal charged with assaulting a handcuffed man while he was working an off-duty security job will serve no jail time and could later have his criminal case dismissed as part of a plea deal with prosecutors.

Michael Oestmann was charged with misdemeanor assault in May after he was accused of punching the suspect in the face and kneeing him in the chest, rendering the man unconscious.

Oestmann was working as an off-duty security officer on April 14 at Jackson’s Hole Bar on 20th Street in Lower Downtown when he detained the man, who was suspected of participating in a bar fight.

The suspect, Kevin Watson, allegedly yelled insults and spat at Oestmann while sitting in the bar’s basement with his hands handcuffed behind him before Oestmann attacked him, a police report showed. Watson was taken to the hospital for treatment of cuts on his face.

Oestmann, 38, pleaded guilty Friday to a charge of misdemeanor menacing as part of the deal, court records show. His original assault charge carried a maximum sentence of two years in jail while the menacing charge has a maximum of six months of jail time.

But the plea deal stipulates that Oestmann’s guilty plea and the entire case will be wiped clean from his record if the corporal complies with court orders for a year as part of a deferred judgment. During that time, Oestmann must complete anger management as directed by Nicolleti-Flater Associates, a Lakewood company that provides police mental health services and assessments. He will not pay restitution to Watson.

The plea deal also allows Oestmann to continue to carry a gun at the discretion of the police department.

Oestmann remains employed at the Denver Police Department, where an internal investigation continues, police spokesman Jay Casillas said Tuesday. Oestmann is currently assigned to a clerk position in District 5, which covers Stapleton and the northeast corner of the city, Casillas said.

Although Oestmann was not on duty at the time, officers working off-duty still wear their uniforms and are still bound by the department’s policies, though their wages are paid by third parties.

A spokeswoman for the Denver District Attorney’s Office did not return a call for comment Tuesday afternoon.

Oestmann joined the police department in 2005 and has received 10 commendations as well as 18 citizen and internal complaints, according to previous Denver Post reporting. Twice in the past he was investigated for inappropriate force and once for mistreatment of prisoners, but those complaints were dismissed. His only prior discipline was a 2007 oral reprimand for improper procedure.

In 2009, Oestmann was found justified in shooting and killing a suicidal man who pointed a gun at him and other officers.