Ilkay Gundogan made the shock revelation about Barcelona star Lamine Yamal in a podcast episode.
But former Blaugrana midfielder Gundogan remembers the game for different reasons as he recalled Yamal leaving the pitch to go to the toilet. It's happened to the likes of Eric Dier and Jason Puncheon in England, but Barca had to play with a man less for a long period before Yamal was eventually replaced by Marcos Alonso.