21-year-old, Louis, who once worked at the Doncaster Rovers club as a hospitality waiter, has been issued with the number 28 shirt for the 2013/14 season.
He has signed as a non-contract player in aid of Bluebell Wood Children's Hospice in Sheffield.
More top news
The mother of an ex-girlfriend of Arnis Zalkalns has told ITV News her daughter is "in shock" over his connection to the Alice Gross case.
A pilot scheme involving major record companies will begin this Friday. It is expected 20% of videos will be subject to a ratings warning.
Ever seen anything more eccentric? Bizarre innovations unearthed by a historian spanning 100 years.