Manager Nigel Adkins initially insisted he would lodge an appeal, but a lack of video evidence has put paid to his hopes.
Byrne now faces a mammoth five-match suspension, starting at Newcastle on Wednesday night.
The midfielder has been an alleged target of both Manchester United and Liverpool for some time with the player teasing
Its crunch day on Sunday for Hull and Newcastle, with Sunderlands draw at Arsenal meaning only those two clubs can
Manchester United manager Louis van Gaal is interested in signing Bayern Munich midfielder Bastian Schweinsteiger this summer.
Mesut Ozil receives the PFA Fans' Player of the Month award for April before kick-off against Sunderland, the penultimate game
This week, Liverpool FC have been dominating the off the pitch headlines.
With the future of De Gea yet to be decided it seems that United are already busy recruiting his successor