Bath have confirmed that Olly Barkley will leave them to join Racing-Metro while the Rec side have brought in Brett Sharman on a short-term deal.
23-times capped England international Barkley will be available for two more games at Bath, before joining the Paris club as a medical joker.
A stalwart of not only the club but the English game, Barkley amassed over 200 appearances for Bath which made it tough for him to leave.
"Bath Rugby is in my heart and it always will be. When I no longer play the game, this will be the club I come to watch," he said.
"I will be forever a Bath boy but this, for me, was simply the opportunity of a lifetime and one I just couldn't ignore.
"I will miss the club always, and I wish all of my mates here the very best. I believe they are a special group with special coaches, and I hope they achieve everything they desire.
"I'd like to thank the club for their understanding, and also the Bath supporters who have been amazing to me in my time here."
Head coach Gary Gold added his own words of good luck to Barkley.
"Barks is a great bloke and a top player. I could not have been more impressed with both his attitude and his incredibly professional approach since I arrived at the club," he said.
"As a senior player, he could not have worked harder or been more welcoming to us as a group of coaches, but every now and then an offer lands on the table that a bloke just can't refuse. We are sorry to see him go, but he goes with our blessing. He will always be welcome here."
Bath also confirmed they have signed former Saints hooker Sharman on a short-term deal.