Nathan Tella has sealed a permanent transfer to Bundesliga club, Bayer Leverkusen.
Tella, who joined Die Werkself from Sky Bet Championship club, Southampton, put pen to paper on a five-year contract.
The 24-year-old will wear jersey number 19 at his new club.
The Nigerian-born winger spent last season on loan at Burnley and helped the club to gain promotion to the Premier League.
He reflected on his move to the former Bundesliga champions.