Complex sentence: Horner was released by Hibernian at the end of his contract in 2013 and then signed for English non-league club Newcastle Benfield, Horner moved to Blyth Spartans in September 2013, having played for Newcastle Benfield against them during pre-season.
Split into simpler sentences: Horner was released by Hibernian at the end of his contract in 2013 and he signed for English non-league club Newcastle Benfield. He then moved to Blyth Spartans in September 2013, having played against them during pre-season.