FIFA president Gianni Infantino says he will block any attempt to stage Girona and Barcelona's La Liga match in the United States next year.
Both clubs have agreed in principle to the proposal to stage a game in Miami in January as part of a 15-year agreement between Spain's top division and Relevent Sports.
La Liga president Javier Tebas has met with serious opposition since putting forward the proposal, with the Royal Spanish Football Federation (RFEF) and Association of Spanish Footballers (AFE) publicly against the plans.
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Infantino has now added world football's governing body to the list of those who believe the match must not be staged outside Spain.