Ligue 1 side Nantes have reportedly demanded that Cardiff City pay the £15m transfer fee for striker Emiliano Sala, who went missing on his way to join up with the Bluebirds.
After agreeing the deal in January, Sala and pilot David Ibbotson left Nantes to fly to Cardiff, but their plane disappeared from radar as it flew over the English Channel. No trace of Sala has been found as of yet, but the wreckage of the plane was found on the seabed.
News of Nantes' demand comes from BBC Sport, who state that Cardiff have withheld the first agreed payment until they are happy with the documentation.