La Liga president Javier Tebas believes Barcelona's game against Girona in Miami will go ahead despite the Spanish FA (RFEF) requiring more documentation over the plan.
The proposal, part of a new deal with Relevent, the company behind the International Champions Cup, had chosen the January fixture as the first La Liga game to be played in the United States.
Players have voiced their opposition to the plan despite Girona and Barcelona giving the green light to move the match to Miami.
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And the RFEF appeared to put the proposal in jeopardy on Friday by writing to La Liga to ask for more details on the agreement.