The German club confirmed the arrival of the young striker in a short Twitter post on Saturday.
The post read, “Nathan Tella BABY! We are delighted to announce the signing of the 24-year-old Englishman on a deal until 2028!”
The future of the striker at the Saints had been unclear since his return from an impressive loan spell last season at Burnley where his impressive 17 goals and five assists helped the Clarets in the run-up to their English Championship triumph.
He was linked with a return to Burnley. However, the Clarets were unwilling to match Southampton’s demands.
Eventually, Bayer Leverkusen entered the deal and were willing to match Southampton’s £20million-valuation of the 24-year-old.
Born in England to Nigerian parents, the young striker will now link up with top marksman, Victor Boniface, at the Bay Arena.
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