Juventus have signed permanently Italy internationals Alessandro Matri, Fabio Quagliarella, Simone Pepe and Marco Motta.
The 28-year-old striker moved to Turin last summer on a one-year loan deal and has signed a contract until June 2014.
Winger Pepe and defender Motta also arrived at Juve last summer on loan from Udinese.
Pepe and Motta have switched to Turin permanently on 7.5m euros and 3.75m euros transfer fees, respectively.
Matri, Pepe and Motta have all penned four-year contracts with the Bianconeri.