Cardiff City have been told by the FIFA Players' Status Committee to pay Nantes €6 million (A$9.7 million) for the late Emiliano Sala.
The striker became Cardiff's record signing when a deal was struck with the Ligue 1 club in January.
But before he made an appearance for City, the plane carrying Sala from France to Wales crashed and he was killed, along with pilot David Ibbotson.
Cardiff claimed the agreement to pay Nantes a £15 million (A$27 million) fee was not legally binding because conditions insisted upon by Nantes were not fulfilled.
The club, who were relegated from the Premier League at the end of last season, refused to make the first scheduled payment over what chairman Mehmet Dalman identified as "anomalies" in the deal, prompting Nantes to make a complaint to FIFA.
The FIFA Players' Status Committee said on Tuesday (AEST) the €6 million (A$9.7 million) Nantes should receive from Cardiff is "corresponding to the first instalment due".
A statement read: "The FIFA Players' Status Committee, which never lost sight of the specific and unique circumstances of this tragic situation during its deliberations on the dispute at stake, refrained from imposing procedural costs on the parties.
"The findings of the decision were notified to the parties concerned today."
In response to the decision, a spokesperson for Cardiff said: "Cardiff City FC acknowledges the decision announced today by FIFA’s Players Status Committee regarding the transfer of Emiliano Sala.
"We will be seeking further clarification from FIFA on the exact meaning of their statement in order to make an informed decision on our next steps."
Nantes president Waldemar Kita told L'Equipe in May he did not want to receive money for Sala.
"The truth is, I don't even want that money, and I may never get it," he said.
"I don't want to make money on someone who died tragically. I'm not interested in that."
When asked why he had therefore not brought the issue to a halt, Kita replied: "I am not involved at all in the case. The lawyers are in charge of it."