Barcelona decided to pick its La Liga match against Villarreal to be played outside of Spain and submitted its demand to La Liga which apparently accepted the request and sent it to UEFA which seems to accept the suggestion too and it is up to FIFA to accept or refuse it.
Since the match will be played in USA, Miami, then I suppose FIFA will not try to annoy the president especially that the big event, World Cup, will take place next year in USA.
Back to Barcelona request, apparently there is some earning that will go directly to them to fill their always empty boxes.