Italian international Angelo Ogbonna has signed a five-year deal with Juventus from cross town rivals, Torino, confirmed the Italian champions on their official website.
Juventus will pay €13m in three instalments for the precocious centre back. This fee could rise by an extra €2m in bonuses if sporting objectives are met by Ogbonna at the club.
Ogbonna, who completed his medical on Thursday, will now join up with his new teammates in Chatillon for the club's pre season preparations.
Ogbonna, who is capable of playing in the centre of defence as well as a left back, is the third major signing for the Turin club after Fernando Llorente and Carlos Tevez.