Cardiff City has officially lodged an appeal against FIFA's decision on Wednesday that the club should pay FC Nantes the first installment of the transfer fee for the killed Emiliano Sala.

The team from the English Championship has announced it will go to the international sports tribunal CAS to challenge the ruling.

The FIFA Players' Status Committee (PSC) of the global football association decided on Monday that Cardiff should pay the first installment of 6 million euros to the French club.

The two clubs have been struggling for a long time about the transfer fee of the 28-year-old Argentinian who died in a plane crash at the beginning of this year. He was then en route from Nantes to Cardiff to complete the transfer. His body was found two weeks later.

According to British media, the Wales club had argued that the transfer from Sala was not valid. The attacker's contract was allegedly rejected by the Premier League (where Cardiff City played last season) because it did not comply with the rules. The Argentinian died before a new commitment could be drawn up.

However, FIFA was in favor of the French club, as a result of which Cardiff also seems to have to pay the rest of the transfer fee of a total of 17.5 million euros to Nantes.