<p>The 48-year-old Italian will coach the club until the end of the 2027/28 season, Besiktas said in a statement.</p><p>The former coach of Serie A clubs Fiorentina and Bologna becomes the 11th manager at Besiktas in the past five years, following Frenchman Valerien Ismael, Dutchman Giovanni van Bronckhorst and Norwegian Ole Gunnar Solskjaer.</p><p>Crowned Turkish champions for the 16th time in 2021, Besiktas have since struggled to compete with Galatasaray and Fenerbahce, the two other big Istanbul clubs.</p>