Arne Slot says Liverpool defender Amara Nallo must learn from his “cruel” red card in Wednesday’s 3-2 defeat to PSV Eindhoven in the Champions League. The academy graduate’s first-team debut lasted just four minutes at Philips Stadion as he was sent off late in the second half for a professional foul on Johan Bakayoko.

Four minutes after entering as a substitute in the 83rd, Nallo was shown a straight red card for a professional foul as Liverpool fell to a 3-2 loss at PSV Eindhoven on Wednesday. That result didn’t prevent the Premier League leaders from finishing in first place in the new league phase in Europe’s top competition.

Liverpool teenager Amara Nallo learned a harsh lesson as he was sent off four minutes after coming off the bench to make his senior debut in the Champions League game at PSV Eindhoven on Wednesday.