Rangers boss Stuart McCall says he feels sorry for Gael Bigirimana, but admits he should never have been signed.
Chris Gunter will stay at Reading, after the club took up the option to extend his deal by another year.
Rangers said Traynor, who left his role with the Daily Record on Sunday and has ceased working as a BBC Radio Scotland presenter, would oversee the development of all of the club's media platforms from early next year.
A statement read: "James joins Rangers following a distinguished journalistic career with The Herald, Express and Daily Record newspapers as well as being a presenter with the BBC.
"In his role at Ibrox, James will be supported by the Rangers Media editorial team, the press office and external media advisers, Media House."