Mario Mandžukić has officially called it quits on football. The Croatian announced his retirement on his Instagram official account on Friday, September 3rd, 2021. He played for Bayern Munich, Juventus, Atletico Madrid, AC Milan, Marsonia, Dinamo Zagreb, Wolfsburg. READ ALSO: FIFA MIGHT SANCTION PREMIER LEAGUE CLUBS The 35-year-old was a key part of the Croatian…