Borussia Dortmund have announced the signing of Bayer Leverkusen defender Omer Toprak ahead of next season.
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Thomas Tuchel's side have agreed to pay the Turkey international's release clause, which is reported to be €12 million.
And the centre-back has signed a four-year deal with the eight-time Bundesliga champions.
Toprak is rated as one of the best defenders in Germany, and Dortmund sporting director Michael Zorc is hopeful he can make a real impact at the Westfalenstadion.
"Omer Toprak is a strong defender with international experience and great leadership qualities," he said in a club statement.
Toprak will now turn his attention to drive Leverkusen up the Bundesliga table as well as their upcoming Champions League last-16 tie against Atletico Madrid.