44-year-old football manager Mladen Žižović has tragically died mid-match after suffering a heart attack during a Serbian top-flight football game. The Radnicki 1923 manager collapsed on the touchline just 22 minutes into the game and despite being rushed to the hospital, he couldn’t be saved. The devastating news sparked emotional scenes as teammates and staff broke down in tears, with the referee abandoning the game. Zizovic had only been in charge of Radnicki for three games since taking over