Liverpool boss Arne Slot has expressed his disappointment after his side’s dire 3-0 defeat to Manchester City at the Etihad Stadium on Sunday.The Reds had entered the showdown hoping to continue their resurgence after recent victories over Aston Villa and Real Madrid.But that didn’t happen at the Etihad Stadium, with Erling Haaland, Nico Gonzalez and Jeremy Doku all scoring to give Pep Guardiola’s men all three points.Liverpool were a shadow of their usual selves on the day, with Slot’s men unable to cope with those wearing sky blue.There was controversy in the first half when they were 1-0 down, however, with Virgil van Dijk having a goal disallowed after Andy Robertson was adjudged to have impeded Gianluigi Donnarumma.Slot, when asked about the incident, didn’t mince his words.”It is difficult to give my view. It is obvious and clear that the wrong decision has been made at least in my opinion,” he fumed.”He didn’t interfere at all with what the goalkeeper could do. Immediately after the game someone showed me the goal that the same referee allowed – City against Wolves last season.Arne Slot cut a frustrated figure on the touchline as Man City thumped Liverpool at the Etihad Stadium | GETTYVirgil van Dijk had a goal ruled out in Liverpool’s defeat to Manchester City | GETTYLiverpool were flat on Sunday as Manchester City ran riot at the Etihad Stadium | GETTYErling Haaland was on the scoresheet for Manchester City again as they crushed Liverpool at the Etihad Stadium | REUTERS