Shakhtar Donetsk have issued a demand for €50million (£43m) in damages from FIFA over lost transfer fees amid their player exodus following Russia's invasion of Ukraine.
Football's governing body previously ruled that foreign players would be able to suspend contracts and seek a new club in another country amid the war.
Shakhtar chief executive Sergei Palkin stated that agents were profiting from the situation and taking payment for deals rather than the Ukrainian Premier League club.
The club have now appealed to the Court of Arbitration for Sport (CAS).
"We had to do this because of FIFA's highly unfair ruling," Palkin told BBC Sport. "The consequences mean we will continue to lose significant income from deals we expected to close.
"We would also like to highlight that given the situation Ukrainian clubs are facing with the war, there has been little respect shown towards these clubs by FIFA.
"FIFA has not looked to protect clubs and at no stage consulted with us to find a solution - they have seemingly ignored the perilous state that Ukrainian football clubs have been facing since the beginning of the war."
FIFA's decision on June 21 gave Shakhtar and other Ukrainian clubs until June 30 to finalise sales before foreign players were able to unilaterally suspend contracts.
This has lead to several players allegedly halting pending transfers, before effectively being able to leave for free, with the club reportedly naming Manor Solomon and Tete as two such individuals.
"In absence of any reaction from FIFA, we will have no choice but to seek for damages compensation from the competent courts," added Palkin.
"I believe more meaningful support initiative to Ukrainian clubs is needed from FIFA."
Shakhtar meanwhile continue to train abroad, with the squad currently in the Netherlands, ahead of a hoped-for resumption of football back home in August.
Serie A side Genoa confirm sacking of head coach Gilardino
Serie A side Genoa have confirmed the departure of their head coach Alberto Gilardino, with Patrick Vieira reportedly on his way in.
Gilardino, a World Cup winner with Italy in 2006, leaves the club with them sitting just one point above the relegation size with 10 points from 12 matches this season.
A former striker who played for clubs including Genoa, Parma, AC Milan and Fiorentina, Gilardino took charge of Genoa in 2022 and helped them earn promotion to the top division before a 11th-place finish during the 2023-24 season.
"The club thanks Gilardino for the goals achieved together over the years and wishes him the best for his career," Genoa said in a statement.
The 42-year-old saw his side salvage a late 1-1 draw against Cesc Fabregas' Como in their last match before the international break.
Genoa were also knocked out of the Coppa Italia in the second round following a defeat to Sampdoria on penalties in September.
Arsenal legend Vieira is set to replace him, according to multiple reports.
The former France midfielder has been out of work since leaving Strasbourg by mutual consent in July.
Doncic backs Mbappe to turn fortunes around at Real Madrid
NBA superstar Luka Doncic has backed Kylian Mbappe to "figure it out" after his underwhelming start to life at Real Madrid.
Mbappe has scored eight goals in 16 games for Madrid in all competitions since joining as a free agent following the expiration of his Paris Saint-Germain contract.
He has gone four matches without a goal – a run that includes losses to Barcelona and Milan – and has been left out of France's latest squad.
However, Dallas Mavericks guard Doncic – a Real Madrid supporter due to his previous ties with the sports club – can see Mbappe turning things around.
"Obviously [their season] could be better," Doncic told Managing Madrid after the Mavericks' win over the San Antonio Spurs on Saturday.
"But when you get a guy like Mbappe, it takes some time to get used to it. We'll figure it out."
Mbappe has scored six goals in 11 LaLiga appearances for Madrid but has underperformed his season's expected goals (xG) total by 2.04.
The forward is averaging a goal every 166 minutes in all competitions this term, compared to one every 88 minutes for PSG in his last of seven seasons in Paris.
Madrid thrashed Osasuna 4-0 last time out in the league to return to winning ways but still trail leaders Barcelona by six points.
Asked about his connections with Madrid, former Los Blancos basketball player Doncic said: "I follow Real Madrid every time.
"I grew up there. They taught me everything, so it's a part of my life. You can call it a secondary home.
"I learned a lot of stuff there and, especially, they gave me a way to be here right now [in Dallas]. I always appreciate that 100%."
Madrid return to action after the international break with a trip to Leganes on Sunday.
Real Madrid 0-4 Barcelona: Guijarro brace sets visitors up for Clasico glory
Patri Guijarro's first-half brace set Barcelona on their way to a thumping 4-0 win over rivals Real Madrid in Liga F on Saturday.
Claudia Pina and Alexia Putellas were also on target as Barcelona continued their perfect start to the season, extending their lead at the top of the table.
The visitors dominated from the off, as Guijarro broke the deadlock inside the fourth minute, tapping in from Putellas' flick-on from a corner.
Cata Coll was forced into a big save to deny Alba Redondo an equaliser shortly after, but Madrid's hope was soon dented as Guijarro picked out the bottom corner with a superb long-range strike for her second.
Pina strengthened their lead six minutes before the break, clinically slotting past Misa with her low strike.
Putellas added some more gloss to the scoreline with four minutes remaining of normal time, beating the Madrid keeper with a lovely dink to bring up her 199th goal for the club.
Barcelona have won all 10 of their games, and now sit eight points clear of Madrid, who suffered their first league defeat of the campaign.
Data Debrief: Total dominance
Madrid will have felt fairly confident coming into this game after a strong start to their season, but they once again failed to find a way past their Clasico rival.
Los Blancos have lost every single game they have played against Barcelona in all competitions, with this their 15th such meeting.
Barcelona smothered their attack early on, restricting their hosts to just one shot in the first half, while they had 10.
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