FREMANTLE defender Michael Johnson has been charged after a kebab shop patron was allegedly assaulted last week.

The assault against a 23-year-old Bunbury teacher is alleged to have happened in the Perth suburb of Leederville in the early hours of November 13 after the victim filmed the veteran Docker with his pants down around his ankles.

Police confirmed on Friday they had charged a 32-year-old Canning Vale man with assault occasioning bodily harm and he is due to appear in Perth Magistrates Court on January 18.

Fremantle released a statement on Tuesday last week from CEO Steve Rosich.

"We are treating the matter seriously and we are very disappointed that Michael placed himself in such a situation last weekend," he said.

"Michael, who was on leave at the time, is a senior player and a member of our leadership group.

"In this instance the position Michael placed himself in, including his alleged behaviour, was not acceptable. As a club we support the person and challenge the behaviour.

"Thankfully, there was not anyone seriously injured.

"The club has advised the AFL and will continue to update the AFL until the matter is resolved.

"Given that the matter is still being investigated by police, the club is not in a position to comment further or discuss any possible sanction until the investigative and legal process is completed."

Johnson played only four matches in 2016 because of injury.