"The purchase of Fabio Grosso brings extra quality to an already very competitive squad," Old Lady general manager Jean-Claude Blanc told the club's official site.

"The international experience and talents of a world champion will surely be useful to a team engaged on three fronts.

"(Coach Ciro) Ferrara will find again a player who got to enjoy his experiences with the national team.

"This closes a very challenging market for Juventus, who are now in the best condition for maximum focus on their sporting goals."

Grosso, 31, spent the last two terms at French side Lyon, whom he joined from Inter Milan following a season-long spell at San Siro.

On the international stage, he has been featuring for four-time world champions Italy since 2003.