Complex sentence: Picken played for Chesterfield on a loan basis from 18 August 2005 until the end of the season, and later joined the club on a permanent basis after being released by Manchester United.
Split into simpler sentences: Picken played for Chesterfield on a loan basis from 18 August 2005 until the end of the season. He will now stay at the club on a permanent basis after being released by Manchester United.