Bayern Munich defender
The 22-year-old fullback, who played in the ill-fated UEFA Champions League final against Chelsea last month, was previously tied to the club until 2013 but will now spend the next four seasons in Bavaria.
Contento, who was born in
He has already appeared in two Champions League finals, but was on the losing side on both occasions.
Champions League finalists Bayern Munich and Borussia Dortmund are proof that clubs do not have to spend beyond their means to achieve success, UEFA president Michel Platini says.