Italian referee Marco Guida (3L) shows Galatasaray's Hungarian defender #07 Roland Sallai (L) a yellow card during the UEFA Champions League, league phase matchday 2, football match between Galatasaray and Barcelona at the Ali Sami Yen Sports Complex in Istanbul on October 13, 2026. (Photo by Ozan KOSE / AFP via Getty Images)

Barcelona's Spanish forward #10 Lamine Yamal gestures during the UEFA Champions League, league phase matchday 2, football match between Galatasaray and Barcelona at the Ali Sami Yen Sports Complex in Istanbul on October 13, 2026. (Photo by Ozan KOSE / AFP via Getty Images)

Barcelona's German coach Hansi Flick (R) gestures in the technical area during the UEFA Champions League, league phase matchday 2, football match between Galatasaray and Barcelona at the Ali Sami Yen Sports Complex in Istanbul on October 13, 2026. (Photo by YASIN AKGUL / AFP via Getty Images)

Barcelona's German coach Hansi Flick looks on from the technical area during the UEFA Champions League, league phase matchday 2, football match between Galatasaray and Barcelona at the Ali Sami Yen Sports Complex in Istanbul on October 13, 2026. (Photo by YASIN AKGUL / AFP via Getty Images)

Galatasaray's Nigerian forward #45 Victor Osimhen (L) heads the ball in front of Barcelona's Spanish defender #05 Pau Cubarsi (R) during the UEFA Champions League, league phase matchday 2, football match between Galatasaray and Barcelona at the Ali Sami Yen Sports Complex in Istanbul on October 13, 2026. (Photo by Ozan KOSE / AFP via Getty Images)

Barcelona's Spanish goalkeeper #01 Joan Garcia (L) and Galatasaray's Nigerian forward #45 Victor Osimhen (R) react towards each other during the UEFA Champions League, league phase matchday 2, football match between Galatasaray and Barcelona at the Ali Sami Yen Sports Complex in Istanbul on October 13, 2026. (Photo by Ozan KOSE / AFP via Getty Images)

Barcelona's Spanish forward #10 Lamine Yamal takes the captain's armband during the UEFA Champions League, league phase matchday 2, football match between Galatasaray and Barcelona at the Ali Sami Yen Sports Complex in Istanbul on October 13, 2026. (Photo by YASIN AKGUL / AFP via Getty Images)

Galatasaray's Nigerian forward #45 Victor Osimhen runs with the ball during the UEFA Champions League, league phase matchday 2, football match between Galatasaray and Barcelona at the Ali Sami Yen Sports Complex in Istanbul on October 13, 2026. (Photo by Ozan KOSE / AFP via Getty Images)