Norwich City manager Daniel Farke has revealed he exchanged words with Christos Tzolis in the dressing room following his penalty miss in Liverpool's League Cup win over the Canaries on Tuesday night.
The Reds were leading 1-0 thanks to Takumi Minamino's early strike before debutant Conor Bradley brought down Dimitris Giannoulis shortly before the break.
Following an on-field debate with Adam Idah over who would take the penalty, Greece international Tzolis stepped up to take the spot-kick only to see his effort saved by Liverpool goalkeeper Caoimhin Kelleher.
And Farke admitted after the game that the 19-year-old was not the designated taker for the game as he shared his annoyance at the miss and revealed he'd already taken steps to ensure it doesn't happen again.
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"It’s not important I don’t want to speak about this topic," Farke told Sky Sports. "He has apologised so it is okay.
"When you choose to work with young players, (you) accept there are mistakes. Believe me after our conversation it will never happen again.
"No, he was not (the taker) on the paper. It was a big mistake. Listen young guy, he helped create it, unbelievable emotion and excited this is what happens. Young players, they take the wrong decisions.
"I’m a bit annoyed. None of my other players were aware he should take penalties again. I love this guy, he will be an important player for us in the future.
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"In general, he had a really good performance but, believe me, in the dressing room it is clear that this never happens again and he has done the mistake once.
"Believe me, we will make sure he will never do such mistake again."