Stephen Myler will leave Northampton Saints at the end of the season, the club have confirmed.
The 33-year-old fly-half has spent 12 seasons at Saints, after making his debut in 2006, having switched codes from rugby league earlier that year.
He has made more than 300 first-team appearance for Saints, and was instrumental in the club winning domestic and European honours.
"I'll be forever grateful to the club for giving me the opportunity to make the switch from rugby league early in my career," he said, in a club statement.
"I'm extremely proud to have spent almost 12 seasons at Franklin's Gardens, and I hope I've been able to repay the club for the opportunity they gave me and the faith they showed in me by playing as many games as I have.
"I've been lucky enough to play alongside some great players, in some great teams, but more importantly I have met many great people in my time at Saints.
"I cannot express how much the support I've received from Saints supporters has meant to me over the years - both on the pitch and off it, and notably during my testimonial season which they helped make so enjoyable for me."
Myler boasts a record of 23 kicks from 23 attempts in finals for Saints, and moved himself up to third on the Aviva Premiership's all-time list of points scorers earlier this season.
He added: "I will leave with memories that will stay with me forever, having played and enjoyed success in many key games in the club's history.
"But the time has come for me to move on. I'm grateful for what has been, but I'm ready and looking forward to what my future holds.