Blasi, a 27-year-old midfielder, has agreed terms on a five-year deal while striker Zalayeta, 28, has signed a four-year contract.
Juventus have maintained joint ownership of the players.
Copyright (c) PA Sport 2007, All Rights Reserved.
Do YOU want to write for GiveMeSport? Get started today by signing-up and submitting an article HERE: https://www.givemesport.com/writeforgms