The 31-year-old, who was granted life membership at the club after featuring on 153-occasions, will depart Princes Park after spending the best part of a decade in a navy blue guernsey.
Speaking to the club's website, Casboult fondly reminisced on his time as a Blue bagger.
“The opportunity to call Carlton home and live out my boyhood dream over the past 12 years has been incredible,” the 31-year-old exclaimed.
“To be departing the Club with Life Membership and after reaching the 150-game milestone earlier this year, is something I am incredibly proud of and am honoured to have been able to achieve."
From boyhood 'Bagger to Carlton life member: Thank you for the memories, Levi. 💙
— Carlton FC (@CarltonFC) August 17, 2021
The often maligned forward also paid praise to those that had helped him across his career thus far.
“So many people at this football club have shown faith in me over the course of my career and I am extremely grateful for the support I have received, both internally from a staffing and player point of view, and externally from my family, friends and all Carlton members and supporters," Casboult continued.
The big man managed 154-goals over his career with the club and was known for his incredible contested marking ability, with his vice-like grip on the footy being one of the strongest in the league.
Levi Casboult is clunking them left, right and centre atm 🙌🏉 pic.twitter.com/ACTUgVNVVl
— AFL (@AFL) June 28, 2020
As of current, Casboult hasn't announced whether he will look for a new club or end his career as a one-club player, with the forward growing up as a Blues fan.