Amir Khan's upcoming defence of his WBA light-welterweight crown will not be shown on Sky Sports or Sky Box Office.
Khan, 24, is due to fight European champion Paul McCloskey on Saturday in Manchester.
But a spokesperson for Sky Sports confirmed: "Khan vs McCloskey will not be shown on Sky Box Office or any of the Sky Sports channels as it has not proved possible to reach an agreement on TV scheduling.
"Financial terms were agreed and a solution was offered for the fight to appear on Sky Sports 3 and Sky Sports HD3 following the decision not to broadcast on Sky Box Office. It was not accepted.
"The Khan vs McCloskey bill had been announced as a Sky Box Office event two months ago. Since then there were several changes to the bill so we made the decision - before the main promotional campaign started and Sky customers booked the event - to give it to Sky Sports viewers."