Johnny McPhillips is set to leave against Leicester Tigers to join French second-tier side Carcassonne.
The Newcastle-born former Ireland Under-20 international will complete his move at the imminent end of the 2020-21 season.
McPhillips was on the Tigers team that came through the first two rounds of the European Challenge Cup in April.
But he was then left out when the Tigers’ first choice outside half George Ford returned from England duty.
“We wish Johnny all the best at Carcassonne. On behalf of everyone at Leicester Tigers, I thank Johnny for his contribution to the club on and off the pitch,” said Tigers coach Steve Borthwick.
Tiger, sixth in the Premier League, ended his campaign with a local derby against the Wasps in Coventry on Saturday.