Portuguese coach Shakhtar Paulo Fonseca laughed when he was asked about the decision.
"It is difficult to talk about penalties after such a result – but it's ridiculous, that's all I can say," he said.
"Everyone saw it, but it was not because of the penalty we lost in the game," he added.
Local manager Pep Guardiola agreed that the judge made a serious mistake and said that the incident showed the need to introduce a video referee assistant system (VAR).
"We realized that it was not a punishment, we do not like to shoot in this situation," said Guardiola, who lost the Judge at the time.
"You know VAR and what it is – the judge needs help because he does not want to make mistakes.
"Nowadays, the game is so fast and fast, and someone needs 10 seconds to say something to the judge," he added.
Social media brightened up after the imposition of a penalty.
The city had two further criminal appeals rejected as Sterling, and David Silva had challenges, but Kassai had no choice but to indicate the place 18 minutes ahead of time.
Shakhtar had the right to feel mourned, but for the second time they announced him for the second time in two weeks, the city that probably won thanks to Sterling, Riyad Mahrez and the next strikes of Jesus.
Silva was clearly beheaded by Taras Stepanenko, and Jesus shot in the upper corner.
The result at the Etihad stadium guarantees that the City will hit the derby this weekend with Manchester United in a good heart, with the refreshing bounty of Sergio Aguero, Leroy Sane, Benjamin Mendy & # 39; ego and Vincent Kompany & # 39; ego.
Reuters, with agencies