István Kovács's controversial performance at the Camp Nou opened a can of worms. Hansi Flick complained after the match about the refereeing errors that, according to the German coach, had conditioned the match, and Barça filed a formal complaint with UEFA to denounce that the Romanian referee's decisions "influenced the development and the outcome of the match". In this scenario of maximum tension, Roberto Rosetti, head of European refereeing, was obliged to bet on a safe bet for the return leg at the Riyadh Air Metropolitano. When it comes to saving the furniture, there are 2 names on the table: the Frenchman Clément Turpin and the Pole Szymon Marciniak. The latter, however, officiated the Inter Milan-Barça Champions League semi-final last season and his performance caused a lot of controversy. Therefore, the choice was practically reduced to a single name: Turpin, who, curiously, had already refereed the first leg of the same tie between the Catalans and the Lombards at Montjuïc, which ended 3-3.