Complex sentence: He played for Wingate & Finchley from 2010-2012 before joining Barnet college programme, and then went back to Wingate & Finchley at the start of the 2013 season.
Split into simpler sentences: He played for Wingate & Finchley from 2010-2012 before joining Barnet. He then went back to Wingate & Finchley at the start of the 2013 season.