Jason White will quit Sale Sharks at the end of this season after agreeing a two-year deal with French club Clermont Auvergne.
The former Scotland skipper, currently sidelined because of a finger injury, joined Sale from Glasgow in 2003 and has made more than 100 appearances.
Back-row forward White’s departure comes with Sale losing rugby director Philippe Saint-Andre later this year, while lock Sebastien Chabal also looks poised for a move to France.
White, who captained the Sharks last season, has won 69 Scotland caps and was an injury replacement for the 2005 Lions in New Zealand.
He will follow the likes of Scotland colleagues Nathan Hines, Chris Cusiter and Simon Taylor, who all currently play their club rugby in France.
White, 30, said: “I have thoroughly enjoyed my time with Sale Sharks and I have played with some great players at the club.
“The highlight of my time here is undoubtedly the Guinness Premiership (title) win in 2006.
“I would like to thank the coaches Philippe and Kingsley (Jones) for everything they have done for me.
“I want to leave Sale Sharks on a high, and I am looking to help them win some silverware before I leave.
“It has always been an ambition of mine to play in France, and I am looking forward to moving to Clermont in the summer.”
Head coach Jones added: “It has been a pleasure to work with Jason over the past five years. He is a model professional and always gives us 100%.
“Jason will be missed, but he has a great opportunity in front of him and we wish him well and thank him for his outstanding contribution as a Sale Sharks player.”