Playing for Celtic is a tough job that only players like Matt O’Riley can attest to. The young Dane was at Celtic Park for two and a half years and swept up not only every domestic honour going but Matt O’Riley also won every Celtic Player of The Year Award that was available last season. O’Riley’s sparkling form at Celtic earned him his £25m Brighton move. After making his Premier League debut for Brighton and scoring the winner against Man City, the 23-year-old midfielder has told the Brighton supporters what was ‘so mad’ about the Celtic fans. Matt O’Riley explains why playing in front of t…