I did copy the Sun link to my friend to give some context to my query and that probably accounts for her final sentences. It is surprising that there doesn't seem to be any reference to it in any of the other National Newspapers. With City leading 3-1 it was also a bit of an odd time for a conspiratorial intervention.
Of course PGMOL are their own worst enemy by their secrecy which as Blue Mist says breeds suspicion.
Like bobbyowenquiff on the VAR thread I don't think there is an organised conspiracy or individual corruption in refereeing but I do think that there is some dislike of City within the refereeing community. This I think is fed by media, and especially "pundits", spreading their views as propaganda and at times other managers fanning the flames of this propaganda . So Fernandihno has a reputation for "smart" fouls but he and City are no worse than any of the leading clubs but because attitudes have become conditioned we get more cards. There may also be some, normally subconscious, racism against our ownership again seen more overtly in media, pundits and commentators.
I have a feeling that City would do well to engage a panel of some recently retired FIFA referees - with no connection to PGMOL - possibly from Scotland, USA, Scandinavia and each week submit a video of the game to one of them and ask for an unbiased detailed assessment of all the decisions and non-decisions, in each case highlighting where similar incidents seem to be judged differently - both for and against City. These reports should be sent to PGMOL. EFA, and EPL unedited and perhaps the MEN would publish them on their website. If nothing else referees in City games would know that their decisions (and VAR) would be scrutinised by respected sources and perhaps they would be more careful to be even handed. We had two or three games recently where I wondered whether City had done something like this as we seemed to be getting some fair refereeing but last Saturday's game seemed to be heading back to what we had seen earlier in the season. (Mind you having said that our defensive performance for 50 minutes could easily have left us three goals down but for a bit of luck on our part).