Complex sentence: Unable to break into the first team, however, after their second term with the reserves, the twins were separated; while Henrik was dispatched to Assyriska in Sweden, Niklas remained in the Netherlands, where he signed with FC Zwolle instead.
Split into simpler sentences: Unable to break into the first team, however, after their second term with the reserves, the twins were separated. While Henrik was dispatched to Assyriska in Sweden, Niklas remained in the Netherlands, where he signed with FC Zwolle instead.