Complex sentence: During the summer of 2006 he transferred to Manchester United and in 2012 joined Brighton & Hove Albion, who released him at the end of the 2013--14 season.
Split into simpler sentences: During the summer of 2006 he transferred to Manchester United and in 2012 transferred to Brighton & Hove Albion. Kuszczak was released by Brighton & Hove Albion at the end of the 2013/14 season.