Bath scrum-half Michael Claassens has announced he will leave the club at the end of the season.
The 30-year-old, who is poised to join French heavyweights Toulon, has made more than 160 appearances for the Aviva Premiership side.
"This has been a very difficult decision for me to make, but one I feel is right," said the South African.
"I have loved my time here at Bath. I originally came for two years, and have ended up staying for six.
"I've worked with some fantastic coaches and players, and my wife and I have made many good friends since we moved over, but just feel it is the right time to make a change and have a new challenge."
Bath head coach Gary Gold added: "Mike has been a wonderful player for Bath.
"On and off the field he is the ultimate professional, and his good nature will be missed greatly.
"We completely respect his decision to move on though, and he goes with all our best wishes as he looks to continue his career elsewhere."
Former Irish international Peter Stringer, who was originally brought in as injury cover for Claassens, has signed a new deal that will keep him at Bath until the end of next season.