Real Madrid said it “firmly rejects” having a regular-season Spanish league game played in the United States and warned of “a turning point in the world of football.”

Villarreal, in contrast, is promising free travel and tickets for season-ticket holders if its match against Barcelona in Miami is approved in what would be a first for the league. The 17th-round match in La Liga would be played at the Hard Rock Stadium, Associated Press reported.

Madrid said Tuesday it has taken action to keep the Dec. 20 match from happening in the U.S., claiming it would hurt the “integrity of the competition” and the “legitimacy of the results.”

“The measure, which was taken without prior information or consultation of the clubs participating in the competition, infringes the essential principle of territorial reciprocity, which applies in two-legged league competitions (one match at home and the other at the home of the opposing team), upsetting the competitive balance and giving an undue sporting advantage to the applicant clubs,” Madrid said, according to Associated Press.