Valeriy Morozov will join Worcester Warriors at the end of the season.
The 27-year-old arrived at the Rec as injury cover at the backend of the 2021, debuting in the Heineken Champions Cup against La Rochelle.
He has made nine appearances for the Blue, Black and White to date.
Head Coach Neal Hatley said: “Val has been a great addition to our squad over the second half of the season.
“He’s quickly become a very popular member of the squad and with the injuries we’ve had at loosehead, he has not just helped fill a void but added value to the team with real commitment.
“We are sorry to see him go and we all wish him and his family all the very best at Worcester.”