Matt O’Riley has joined Ligue 1 side Marseille on a season-long loan, subject to the usual regulatory approval.
The Denmark international will work under former Albion head coach Roberto De Zerbi, who led Marseille to a second-place finish last season.
Men’s first team head coach Fabian Hurzeler said, "Matt has the opportunity to challenge himself at the highest level in France and in the Champions League.
"We have a lot of competition in the midfield positions, and while we see Matt's long-term future here with us, this gives him the potential of more game time.
"We will monitor his progress throughout the season with Marseille, and we wish him well for the rest of the season."
The 24-year-old joined Albion from Celtic in August 2024 and has made 25 appearances for us, scoring three goals.
The midfielder has also previously played for MK Dons and Fulham.