FREMANTLE has appointed former Sydney and Western Bulldogs midfielder Simon Garlick as its new chief executive.

Garlick, who played 137 games for the Bulldogs and 44 for Sydney between 1994-2004, takes over from Steve Rosich.

Rosich was sacked on the same day as coach Ross Lyon in late August.

Rosich addresses the media after Ross Lyon's sacking. Picture: AFL Photos

Garlick was the chief executive of the Bulldogs between 2010-15, and more recently was chief executive of Bastion EBA, an independent marketing, communications and commercial agency.

The 44-year-old said he was honoured to be given the job at Fremantle.

"This club has so much potential," Garlick said.

"While the Fremantle Football Club has a relatively short history in the AFL, the region is one of the richest football areas in Australia and the club's supporter base is as significant as it is passionate.

"The foundations have been laid by some great football people, and not just with regard to the history of the club. Fremantle play in a world class venue at Optus Stadium and the facilities at Cockburn are outstanding.

"My background and experience has helped me see and understand the importance of continuing to build a team ethos and culture, which will help deliver sustained success."

Garlick's strong commercial background was pivotal in him securing the role, and he is eager to re-engage Dockers members and fans after a turbulent season.

Fremantle recorded the League's biggest drop in membership in 2019, slumping 7.56 per cent to 51,431, but president Dale Alcock believes the club can become an AFL powerhouse on and off the field.  

"(Applying for the CEO job) I kept coming back to the potential this club has from a supporter and membership base that we've already seen when it's up and going what that can be," Garlick said.

"You go through a list of elements that tend to categorise an opportunity for a club to really explode and there's a whole lot lining up from that perspective."

Garlick's arrival continues a raft of changes at Fremantle since the club posted their fourth straight year without a finals appearance.

Justin Longmuir has been appointed head coach on a three-year deal, while former Dockers and Power hard nut Josh Carr signed on as an assistant this week.

Club stalwarts Aaron Sandilands (retired) and Hayden Ballantyne (delisted) won't be at the club next season, while Ed Langdon was traded to Melbourne on Friday.

Wingman Bradley Hill is eager to join St Kilda, but it remains to be seen if a deal can be struck.