AC Milan have signed former Juventus forward Mario Mandzukic on six-month contract until the end of the season.

The Croatian spent four years in Turin, where he won the Serie A title in each season as well as the Coppa Italia three times, before moving to Qatari side Al-Duhail SC in 2019.

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He returns to Italy with league leaders Milan on a free transfer, where he will spend the next six months. Milan also have the option to extend the 34-year-old's contract by an extra 12 months.

The deal is similar in structure to one which brought Zlatan Ibrahimovic back to Milan in January 2019. His arrival prompted an incredible upturn in form, which saw his initial six-month deal extended.

Milan have lost just once all season as they sit first in Serie A -- three points ahead of second-place Inter Milan, with champions Juve 10 behind.

Mandzukic was part of Bayern Munich's Treble-winning side of 2012-13 and scored the opening goal in the 2-1 victory over Borussia Dortmund in the Champions League final.

He moved to Atletico Madrid in 2014 before signing for Juve 12 months on. Mandzukic scored a stunning overhead kick in Juve's 4-1 defeat to Real Madrid in the 2017 Champions League final.

Mandzukic has 89 caps for Croatia with 33 goals. He was a key part of the team which reached the 2018 World Cup final, scoring in winner the 2-1 semfinal victory over England in extra time and at both ends in the 4-2 final defeat against France.