Ivan Perisic had opened the scoring for Inter with a penalty, which was cancelled out by Ciro Immobile's spot-kick.
Felipe Anderson then finished off a counter-attack with Federico Dimarco down injured, although Inter had the ball when he first sustained the knock and carried on playing with Lautaro Martinez's shot on target.
“There's no debate. Dimarco was down and Inter went to have a shot on goal. If anyone had to put it out of play at that time, it was them, and they did not. It's a clear situation, they legitimised continuing play," said Sarri.
“There's a very clear rule, you only see these complaints in Italy. In Europe, in the Champions League, that doesn't happen. It's only in Italy.
“We struggled in the first half with Inter's width, so we needed to cut off those channels and prevent the crosses."
Luiz Felipe was sent off after the final whistle for 'mocking' Joaquin Correa, although the defender was in tears and argued he had just been joking with a good friend.
“He told me the referee sent him off, but he was only going to say hello to Correa, seeing as they are good friends and played together a long time. There was presumably a horrible misunderstanding.
“Acerbi was given a two-match ban for 'intimidatory behaviour' without lifting a finger, so I shouldn't be too surprised this was considered a red card… Felipe Anderson was practically physically attacked after the goal, I expected to see red cards flying then…"
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