The 25-year-old winger made his league debut for Roma aged just 16 before moving to the Stadio Artemio Franchi in 2010.
A statement on the club's website read: "Torino are happy to announce the acquisition of Alessio Cerci in a co-ownership arrangement with Fiorentina."
Cerci racked up 12 goals in 46 appearances over the course of two seasons with the Viola.
- Stadio Artemio Franchi
- Alessio Cerci