Speaking in Sunday's edition of The Football Paper, Barker has said "I never asked to leave and I want the fans to know that.
"A lot of things are written about players when they sign a new contract and then want to move, and they get a bad press.
"The fact I signed a new contract showed I wanted to end my career at Mansfield. That's the part of the club accepting the bid I did not understand because we were doing well.
"I got a call about 9 o'clock on the Thursday last week saying it was all done and then at 10.40pm I got another saying it hadn't gone through.