Barcelona's German coach Hans-Dieter Flick (C) watches his players during a training session at the Parc des Princes stadium in Paris on October 19, 2026, on the eve of the UEFA Champions League first round day 3 football match between Paris Saint Germain (PSG) and FC Barcelona. (Photo by FRANCK FIFE / AFP via Getty Images)

AEK's Serbian head coach Marko Nikolic (R) attends a press conference at the Etihad Stadium in Manchester, north-west England, on October 19, 2026, the eve of their UEFA Champions League, league phase football match against Manchester City. (Photo by Darren Staples / AFP via Getty Images)

Atletico's Argentinian head coach Diego Simeone (C) speaks with Atletico's US midfielder #05 Johnny Cardosa (L) during a training session in Stuttgart, southern Germany, on October 19, 2026, on the eve of the UEFA Champions League football match VfB Stuttgart v Atletico Madrid. (Photo by THOMAS KIENZLE / AFP via Getty Images)

Atletico's Argentinian head coach Diego Simeone (L) oversees a training session in Stuttgart, southern Germany, on October 19, 2026, on the eve of the UEFA Champions League football match VfB Stuttgart v Atletico Madrid. (Photo by THOMAS KIENZLE / AFP via Getty Images)

Atletico Madrid's players including Spanish midfielder #14 Marcos Llorente (L) take part in a training session in Stuttgart, southern Germany, on October 19, 2026, on the eve of the UEFA Champions League football match VfB Stuttgart v Atletico Madrid. (Photo by THOMAS KIENZLE / AFP via Getty Images)

Atletico Madrid's Nigerian forward #11 Ademola Lookman controls the ball during a training session in Stuttgart, southern Germany, on October 19, 2026, on the eve of the UEFA Champions League football match VfB Stuttgart v Atletico Madrid. (Photo by THOMAS KIENZLE / AFP via Getty Images)

Barcelona's Spanish forward #10 Lamine Yamal (R) jokes with Barcelona's Spanish midfielder #07 Fermin Lopez (L) during a training session at the Parc des Princes stadium in Paris on October 19, 2026, on the eve of the UEFA Champions League first round day 3 football match between Paris Saint Germain (PSG) and FC Barcelona. (Photo by FRANCK FIFE / AFP via Getty Images)

Atletico Madrid's Spanish midfielder #14 Marcos Llorente (L), Madrid's Slovak defender #17 David Hancko (C) and Atletico Madrid's Spanish defender #22 Alejandro Grimaldo (R) take part in a training session in Stuttgart, southern Germany, on October 19, 2026, on the eve of the UEFA Champions League football match VfB Stuttgart v Atletico Madrid. (Photo by THOMAS KIENZLE / AFP via Getty Images)