Cardiff City could discover if they must pay a 17m euro transfer fee to Nantes for Emiliano Sala on Wednesday.
A Fifa panel is meeting to rule on a dispute between the clubs after attempts at a settlement over the payment failed to reach agreement.
The Argentine striker, who was 28, died in a plane crash while travelling from France to join his new club.
It is understood the club the governing body rules against is likely to appeal to the Court of Arbitration for Sport. Read more