Complex sentence: He joined Brighton & Hove Albion on loan in October 2011, before taking a free transfer to Doncaster Rovers in August 2012 who he helped to win the League One title in 2012--13.
Split into simpler sentences: He joined Brighton & Hove Albion on loan in October 2011, before taking a free transfer to Doncaster Rovers in August 2012. He helped "Donny" to win the League One title in 2012--13.