The 19-year-old had gone into a headball duel with a raised elbow with Fabian Kunze and had met it at the head (45.). Kunze was treated in minutes, worn on a stretcher from the square and could not continue playing.
As the Arminia announced, the 23-year-old is getting better again, he was stable, but was brought to the hospital for security.
“Good improvement to the player,” said Nagelsmann, who had replaced Nianzou on the second half. “On the one hand, it’s already a educational measure, that’s already a red card.” Referee Matthias Jölenbeck left it with yellow.
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“You have to learn as a bit more cautious,” said Nagelsmann. Another reason for the replacement was that the defender would have threatened a place of space for another foul.
“I’m already a coach who wants to meet a small educational measure at a young player,” said Nagelsmann. For Nanzou Josip Stanišic had come to the game.