Goalkeeper Mark Oxley was signed on a season-long loan from Hull City in July 2013.
Oxley began his career as a trainee with Rotherham United.
He signed for Hull City for a reported £150,000 in August 2008.
In almost five years with the Tigers, Oxley has managed only one first-team appearance.
He has gained valuable experience, however, from loan spells at Grimsby and Yeovil.
And it is a measure of how highly Oxley is rated by Hull that he signed a new two-year contract in the summer of 2013.