Schuster new Besiktas coach
Denizli announced his resignation for health reasons last week.
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Besiktas agreed a two-year contract with German Schuster, who will earn 2.6 million euro a year, it said in a statement to the Istanbul Stock Exchange.
Schuster coached Real Madrid in 2007-2008. The former Real player took over from Italian Fabio Capello in June 2007 and helped them to a second straight title. He was sacked in December 2008.
Besiktas finished the season fourth in the domestic league, which was won by Bursaspor.