Ex-Fulham boss Marco Silva has hinted that he could walk away from Benfica just three months after taking charge.The Portuguese tactician, who spent seven years managing in England, admitted he is struggling to get to grips with football back in his homeland.Silva was left furious by the officiating in Sunday’s Portuguese ‘Classico’AFPSilva’s frustrations boiled over following his side’s 3-1 defeat to reigning Portuguese champions Porto on Sunday.The 49-year-old was furious at the refereeing in the match at the Estadio do Dragao, particularly after Benfica defender Clement Lenglet was dismissed ten minutes before the interval.The former Fulham boss then suggested that referees in Portugal are often influenced by what clubs say before and after matches.He went on to question how long he could put up with it, referencing that he had come from a ‘different culture’ after many years working in English football.Portuguese outlet Record published a transcript of Silva’s comments following Sunday’s defeat that left his side five points adrift of Porto.“I won’t comment on the sending off. If the club has something to say about the match, I think it should say it,” Silva said.“I don’t know if I’ll be able to continue like this until the end of the season, because I come from a different culture.“Here, unfortunately, you can influence referees before matches, after them and during the week, and sometimes it works. I’m not going to go down that route.”Silva’s disgruntlement at referees is not exclusively reserved for Portuguese football.He had his fair share of run-ins with officials during his time in the Premier League with one clash landing him a whopping £87,000 fine.Silva was caught in a war of words with the referee in Sunday’s clashGettyIt remains to be seen whether his doubts will continue throughout the season having managed just seven league games so far.Silva is attempting to do what Jose Mourinho was unable to do and steer Benfica to a first league title since 2023.But his suggestion that clubs created pressure for referees in the lead up to matches that he believes can affect the outcome is likely to anger prominent figures in the Portuguese game.Former Chelsea and Tottenham boss and now Porto president Andre Villas-Boas appeared less than impressed by Silva’s words, claiming they were borne out of frustration at his side’s defeat.“I think it was great refereeing,” Villas-Boas said.He went on to remind reporters that even Porto had been on the receiving end of decisions that had been ‘difficult to understand’. He then pointed towards the table instead.Silva, who enjoyed spells in charge of Watford, Everton and Fulham, has a chequered history with match officialsGetty“The statistic I know is that Porto have 21 points and seven wins,” Villas-Boas added.