SMALL forward Brandon Matera was one of four players cut by Fremantle in the club's latest round of delistings on Friday.
Matera joins key forward Hugh Dixon, midfielder Tom North and small defender Jarvis Pina in departing the club.
It takes the Dockers' departures this off-season to eight after Cam McCarthy, Jason Carter, Dillon O'Reilly and Isaiah Butters were informed they wouldn't be offered new contracts.
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"This is always a really difficult time of year and made more difficult this year because of the list cuts of which we don’t have exact clarity," Dockers head of football Peter Bell said.
"Clearly, we have to plan for the future and with that in mind, there were some really tough conversations."
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AFL clubs are still awaiting confirmation on list sizes for next season which are likely to fall between 40-42 players, down from 44 (including rookies) in 2020.
Matera, 28, played 43 games at the Dockers after returning home to Western Australia at the end of 2017 following a seven-season stint at Gold Coast that netted 101 games.
He managed just five matches this season as the Dockers favoured youth in their rejuvenation under Justin Longmuir.
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Dixon (No.44) and North (No.65) were taken in the 2017 NAB AFL Draft, with Dixon able to break through for one AFL game.
It leaves Bailey Banfield, Brett Bewley, Lachie Schultz, Luke Valente and Tobe Watson among the Dockers without contracts for next season.
Veteran David Mundy is expected to sign a one-year deal to enter a 17th AFL season, while defender Brennan Cox is also closing in on a fresh contract after an impressive 2020 campaign.