Bonucci, 36, still had one more year on his contract with the Bianconeri, but was not in the plans for the new season.

Having made more than 500 appearances for Juve over two spells, Bonucci leaves the Italian giant having won the league title eight times as well as four Italian Cups.

Bonucci was part of the Italy side which beat England on penalties to win the Euro 2020 final at Wembley and hopes regular football again will help continue his international career.

“It is special for me to take the step abroad for the first time in my career,” Bonucci said on the Union Berlin website.

“At Union, I have the opportunity to continue playing at the highest level and to support the team on its way in three demanding competitions with my experience.

“I am very much looking forward to this new station in my career.”