Chris Dean has been released by Edinburgh to pursue another playing opportunity after more than 150 games for the capital club.
Dean, who came through the ranks at at North Berwick and Edinburgh Academy, spent a decade at the club.
He made his 150th appearance - making him the most-capped centre in the club's history - earlier this year.
But the summer arrival of Mosese Tuipulotu, the younger brother of Scotland cap Sione, added to Edinburgh's already stacked midfield options.
Scotland internationals Mark Bennett, James Lang and Matt Currie, who scored his first Test try against Chile on Saturday, are also in the mix for the 12 and 13 jerseys.
Dean said: “This has been a difficult decision, and one I’ve not taken lightly in any way, however the time felt right for a new challenge.
"I’m incredibly thankful to Edinburgh Rugby for their support throughout my time here, and especially for working with me and allowing me to make this decision.
“I’m immensely proud of what I’ve achieved at this club. To be the club’s most-capped centre is a huge honour, and something I’ll always cherish.
“I’ve made some incredible friends for life and played alongside some fantastic teammates over the years, while I’ll always be appreciative for the unwavering support of the Edinburgh fans. I look forward to what the future holds.”
Edinburgh head coach Sean Everitt added: “Chris has been a fantastic servant to this club, on and off the pitch. His leadership by example and dedication to his teammates has been invaluable.
"He’s a great role model for all aspiring centres, not just for his skills on the field, but for his work ethic and professionalism.
“He’s etched his name in the club’s history books by becoming our most-capped centre of all time, a remarkable achievement that speaks volumes about his consistency and durability.
“He can be immensely proud of what he’s achieved during his time here, and leaves with the very best wishes of everyone at Edinburgh Rugby. He’ll always be welcome back at the club, whether as a fan in the stands or simply to share his experience with the next generation of Edinburgh players.”
The club's managing director Douglas Struth also paid tribute.
He added: “Chris has dedicated himself to the Edinburgh Rugby cause for over a decade.
“His professionalism and talent have been instrumental in creating unforgettable memories for our fans.
"From the dramatic late winner against Glasgow Warriors in 2017 to his crucial score in the European Champions Cup quarter-final against Munster in 2019. Chris has delivered for Edinburgh on the biggest stages.
“Securing his place as both a club centurion and our most-capped centre is a testament to a great career.
"We look forward to celebrating his achievements properly next season at Hive Stadium, giving our supporters a chance to express their gratitude.
“We wish Chris and his family the very best in their next chapter.”
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