Hughes joined Chester City after impressing on trial in July and August 2007.
He signed with Rotherham United in November 2009, having impressed on trial, before he was released in summer 2010.
After impressing on trial he signed a permanent deal with the club in early 2012.
He had impressed on trial in friendlies against Derby County and Chippenham Town.
Howieson signed a two-year scholarship with Burnley in July 2011, after impressing on trial.
Trundle had impressed on trial at Deepdale after being invited to join up with the club for pre-season training.
He was handed a contract until the end of the season by Chesterfield boss Paul Cook after impressing on trial.
However, after he impressed on trial, he instead signed a two-year deal with Rotherham United at the start of the 2007-08 season .
He joined Conference club York City on 25 July 2009 after impressing on trial.
After impressing on trial Murphy signed a two-year deal with Queens Park Rangers.