Crichton was told by coach Ross Lyon and football manager Chris Bond on Tuesday that the Dockers didn't have a place for him on their 2014 list, ending his four-year stint with the club.
Recruited with pick No.48 in the 2009 NAB AFL Draft, the Tasmanian managed just 18 games, including one in 2013, and was better known for his mullet than his on-field exploits.
As he prepared to shave his hair off late this week, the 22-year-old said he was hopeful of earning a pre-season training call up with an AFL club.
"To get a chance to train at another club, you can show them that you're really keen to keep going," he said.
"You really just want to show them that you're ready to knuckle down and do the work.
"If the mullet's got to go, I'm happy to get rid of it."
Crichton was delisted at the end of the 2012 season but a spot was held for him on the Dockers' list and he was re-drafted at the Pre-Season Draft in what shaped as a last chance.
A "laid back country lad", he admitted he hadn't put the necessary work into his football career early in his time at Fremantle.
"My first two years I was a bit too cruisy and I took it a bit too easy," he said.
"The last year-and-a-half I think I knuckled down and turned perception around, but I left it a bit too late.
"I just thought I was going to come in and start playing. It's obviously a lot harder than that."
Crichton played his best football with the Dockers as a run-with player, but he made the transition to half-back under Lyon and found himself battling with key players Paul Duffield and Lee Spurr for a spot in the team.
He said he was happy to play any role if a club gave him a chance with immediate plans to get in the gym and stay fit.
"If I do get the opportunity to train-on I don't want to be out of shape and waste it," he said.
Twitter: @AFL_Nathan
