Juventus striker Alessandro Del Piero
Del Piero, 36, has been at Juve since 1993, winning five Serie A titles, one Italian Cup and the Champions League in 1996.
He also won the 2005 and 2006 titles with the club but they were stripped of those and relegated after being found guilty of match-fixing, allowing Del Piero to add the Serie B crown to his collection in 2007.
"I'm enjoying myself, I'm happy to be here today as it's what I wanted for next year," said Del Piero.
"It wasn't difficult to reach an agreement because there wasn't much to discuss."
He played 91 times for Italy, scoring 27 goals and was part of the squad that lifted the World Cup in 2006.
Del Piero signed his contract in the new Juventus Stadium that will be the club's home from the beginning of next season.