FC Koln supporters, right, fight with a Nice supporter prior the start of the Europa Conference League Group D match between Nice and FC Koln at the Allianz Riviera stadium in Nice, France, Thursday, Sept. 8, 2022. (AP Photo/Daniel Cole)

FC Koln supporter, left, bleeds during a fight with Nice supporters prior the start of the Europa Conference League Group D match between Nice and FC Koln at the Allianz Riviera stadium in Nice, France, Thursday, Sept. 8, 2022. (AP Photo/Daniel Cole)

FC Koln supporters, left, clash with Nice supporters prior to the start of the Europa Conference League Group D match between Nice and FC Koln at the Allianz Riviera stadium in Nice, France, Thursday, Sept. 8, 2022. (AP Photo/Daniel Cole)

Nice, France, 08.09.22: . riots between Fans of Nice and Cologne before the UEFA Europa Conference League 2022-2023 - Group D match between OGC Nice vs 1. FC Koeln at Allianz Riviera on September 8, 2022 in Nice, France. (Photo by Ralf Treese/DeFodi Images) OGC Nice vs 1. FC Koeln - UEFA Europa Conference League 2022-2023 - Group D - Allianz Riviera, Nice, France - 08 Sep 2022,Image: 720684879, License: Rights-managed, Restrictions: , Model Release: no