Question: The 2015–16 season was the 89th season in ACF Fiorentina's history and their 78th in the top-flight of Italian football, the 2015–16 season was also notable for being the first season since the 2011–12 season in which the club manager was  replaced by which former Portuguese footballer, who played as a defensive midfielder, and a current coach?
Sentence (from "Sandro Mencucci"): Sandro Mencucci (Italian: [sandro meŋkuttʃi]; born 18 July 1961) is an Italian businessman and Executive Director Sports Area and Board Director of the Italian Serie A football club ACF Fiorentina based in Florence, Italy.
Relevant evidence: No