Dominic Day will leave Bath at the end of the season to seek a new challenge in Japan, the club confirmed on Tuesday.
Second-row Day, who recently made his 100th appearance, has become a mainstay in the Bath pack since his arrival from Scarlets in 2012.
“I’ve absolutely loved my time with Bath, and will be sad to leave,” said Day.
“This has been an incredible club to be part of for the last four years, and I’ll be watching and cheering the team on from Japan. I’d like to thank all the people who I’ve played with and worked with, and the supporters of Bath, who have been fantastic.
"At this stage in my career, I just felt the time was right for a fresh challenge, and that will certainly be the case in Japan. In the meantime though, I’ll be concentrating on doing everything I can to help the team get the results we want in the final two games of the season.”
Head coach Mike Ford added: “Dom has been a great servant to the club in his time here.
"He’s a great player who you know will always give his all for you on the pitch, and is a brilliant character to have in the squad. We’re sad to see him go, but understand the decision he has made.
"We wish him all the very best, and I’m sure he’ll be a success in Japan.”