Complex sentence: The qualifying competition for UEFA Euro 2016 is a football competition that scheduled to be played from September 2014 to November 2015 to determine the 23 remaining teams to join host France, who qualify automatically as hosts.
Split into simpler sentences: The qualifying competition for UEFA Euro 2016 is a football competition that will be played from September 2014 to November 2015. It will determine the 23 qualifying teams that will compete in UEFA Euro 2016, which is to be held in France, who qualify automatically as hosts.