Remarkably, all three spot-kicks were saved during the match. The home side initially saw Moise Kean's penalty kept out by Mike Maignan, while David de Gea then saved from Theo Hernandez - who was later sent off - and Tammy Abraham either side of half-time.

After the game, Fonseca's attention was on the performance of the officials rather than the goalkeeping.

"I don’t like to talk about refereeing but this isn’t football. Football is about contact and a mere touch shouldn’t be enough to award a penalty," he said. "Just a simple touch can lead to a penalty, we saw that this weekend as well. It makes everyone nervous, and that creates problems. This is football, not a circus."

Interestingly, neither Hernandez nor Abraham is Milan's designated penalty taker despite them taking the responsibility.

"Our penalty taker is [Christian] Pulisic. I don't know why the players changed their minds, I spoke to him and said that it must not happen again," Fonseca said.

Pulisic did score Milan's only goal of the night, having equalised after an hour, before Albert Gudmondsson scored the winner for the host side.

The United States international was visibly angry when brought off for Samuel Chukwueze with seven minutes to go after putting in a bright performance, but the Milan manager explained that he did not want to aggravate an injury.

"It was out of caution for Pulisic, he had a problem with his flexor during the week. Chukwueze came in well and created opportunities," Fonseca said.

In terms of his side's overall performance, Fonseca did not want to focus on Milan's penalty problems and instead suggested it did not do enough to get anything from the match.

"In the first half, we lacked defensive aggression and strength in duels. The way we conceded goals clearly illustrates this; they almost always won the second balls," he said. "We weren't disciplined in our structure."

The defeat ended a run of three straight league victories for Milan, meaning they go into the international break sixth in the table and on the back of a defeat.

Despite that, and the gap to league leaders Napoli extending to six points, he was not panicking.

"In Italy when you win, you’ve played a great match. If we don’t score, we’re the worst team in the world, just as I’m the worst coach. I know how things are," he said.

Fonseca's assessment of the performance was mirrored by defender Matteo Gabbia, who was unhappy with how the game went.

"We are certainly not satisfied with the initial approach. We feel this defeat, as it was our fault and we did not do our best tonight," he said.

"It starts with us, I saw the right disappointment and anger in the dressing room and it can be the only positive from this very negative night. We are angry that we put in this performance."