Complex sentence: He won 4 League of Ireland titles and 3 FAI Cups with Shamrock Rovers before moving to Derry in July 1988 where he won the treble in 1989.
Split into simpler sentences: He won 4 League of Ireland titles and 3 FAI Cups with Shamrock Rovers. He then moved to Derry in July 1988 where he won the treble in 1989.