Hull have failed with their bid to sign Guingamp's Yannis Salibur.
The Tigers appealed to FIFA in an attempt to force through a reported £9million move for the midfielder, following suggestions the paperwork for the deal was not submitted before the transfer window ended last week.
Hull left a space in their 25-man squad list submitted to the Premier League for the remainder of the season, in the hope Salibur would play a part.
However, world football's governing body ended their hopes of landing the player - according to a short statement from Hull on Twitter.