Mellberg, 31, joined Juve last summer as a free agent from Aston Villa and made 27 Serie A appearances for the Turin giants.

"After one season, Juventus salute Olof Mellberg," read a statement on the club's official website, www.juventus.it.

"The Swedish defender leaves the Bianconeri to join Greek club Olympiacos on a permanent transfer for a 2.5million euros fee."

Juve, who finished as Serie A runners-up behind Inter Milan, bolstered their defence last month by re-signing veteran centre-back Fabio Cannavaro from Real Madrid.