Complex sentence: He then signed for Falkirk and became a regular in their side before rejecting a contract from the "Bairns" in the summer of 2007, instead moving to Bohemians.
Split into simpler sentences: He then signed for Falkirk and became a regular in their side. However he rejected a contract from the "Bairns" in the summer of 2007, instead moving to Bohemians.