You can only play the team who turn up. 'Twas ever thus. City won the league last year despite their unarguably best player, Kevin de Bruyne, missing for much of the season. Liverpool almost got there despite the absences of The Ox and Adam Lallana. The team that wins is the team that makes fewer mistakes. Umpires and referees are human beings in sports played by human beings. Errors of judgement are part and parcel of the passion in sport. As long as there's no deliberate partiality we should enjoy it for what it is. Or just don't follow it at all if it irks you so.