Complex sentence: The cub was relegated from National One at the end of the 2014--15 season, after an administration error led to a five-point deduction; this meant that the club missed out on staying up by just a single point.
Split into simpler sentences: The cub was relegated from National One at the end of the 2014-15 season, after an administration error led to a five-point deduction. This meant that the club missed out on staying up by just a single point.