The reason their removal is that the owner of the club from the Zitny ostrov Oszkar Vilagi also owns the Hungarian club ETO FC Gyor, who also qualified for the Conference League. While both sides finished fourth in their respective leagues, Hungary are ranked higher in UEFA's five-year country coefficient ranking.
DAC were supposed to second qualifying round of UEFA's third tier club competition. Their opponent was supposed to be the winner of the first qualifying round tie between Urartu of Armenia and Belarus' Neman Grodno. Instead, the winner of the aforementioned tie will get a bye to the third qualifying round.
"Based on the assessment of the documentation submitted by the clubs presented by the first Chamber of the Financial Control Authority of UEFA Clubs, it concluded that FC ETO Gyor and FC DAC 1904 Dunajska Streda violated the ownership rule of several clubs set out in Article 5.01 of UEFA's regulations for club competitions on the relevant date of 1 March 2025," the UEFA said in a statement on their website.
Slovak football will have only three representatives in the European club competitions in 2025/2026. Slovan Bratislava, who won the title once again, will partake in the Champions League second qualifying round, Spartak Trnava will face Swedish Cup winners BK Hacken in the Europa League first qualifying round, and MSK Zilina will play in the second qualifying round of the Conference League against Rakow Czestochowa.