FREMANTLE skipper David Mundy insists it's too early to "pull the trigger" on Shane Yarran and Michael Johnson, saying the leadership group can't dish out any punishment until the duo's court cases are conducted.

Yarran's AFL future is hanging by a thread after being charged by police over two separate alleged assaults.

The 27-year-old was charged with unlawful wounding arising from an incident in July 2015 – just months before he was drafted by the Dockers.

And he also faces an aggravated assault charge over an alleged incident that involved a family member in November.

Yarran is on indefinite personal leave from the club.

Johnson was also charged with assault after allegedly punching a man in an incident at a kebab shop.

The cases will be heard in early 2017.

Fremantle's off-field woes continued last week when star recruit Harley Bennell had his car impounded after police discovered he was driving without a licence.

Mundy said the leadership group had been emphasising the values of the club following the indiscretions.

But he said it was too early to start handing down any punishments, especially in regards to Yarran and Johnson.

"Well, they haven't been proven guilty of anything yet. So it would be a bit early for us to pull the trigger," Mundy said on Monday.

"It's not ideal. But we're all human, we all make mistakes. It's how we rebound from those mistakes.

"As a group, we have standards we want to live by. Some guys step away from that a little bit at times.

"Shane's essentially like a long-term injured player for us. He's in the background, working hard. But our main focus is on the guys here."

Mundy wants to captain Fremantle again next season, but he faces a major fight to stave off contender Nat Fyfe.

The player group will vote on the captaincy in January, and Mundy is keen to retain the role despite his torrid first year in the job.

Fremantle won just four games last season, while the off-field dramas in recent months have brought the Dockers' culture into question.

Mundy said he was 100 per cent confident the club's culture and work ethic were strong.

"In my time here, in 14 years, it's had its fluctuations," Mundy said.

"But the last five or six years, we've been really rock solid, to the point where around the League we were really envied for how we went about it both on and off the field.

"Our goal is to get back to that stage.

"I'm fully confident we have the resources, people and structures in place to get back to that really quickly."

Mundy revealed he had voted for Fyfe to be captain in a previous player vote.

But Mundy is keen to retain the role for at least one more year, saying he had learnt valuable lessons from 2016.

The 31-year-old is fully fit after undergoing minor ankle surgery during the off-season.