By Matthew Cooper Nottingham Forest owner Evangelos Marinakis has hit out at Premier League referees, claiming a series of mistakes have “cost” his side crucial points this season. Forest have had a number of controversial decision go against them and they remain embroiled in a relegation battle. They currently sit just three points above the relegation zone heading into their final two matches against Chelsea and Burnley. Forest’s frustration with officials boiled over last month after they felt they were denied three penalties in a game they ultimately lost 2-0 to Everton. After the match, t…