Barcelona have been blocked from fielding new signings Aleix Vidal and Arda Turan in friendly action.
Cadena Cope says Barça submitted an enquiry to FIFA about the pair playing in friendly matches over the pre-season.
The games in question are the three on the US tour, the one in Italy against Fiorentina and the Gamper trophy against Roma.
FIFA's answer was negative. Neither the midfielder nor the full-back can be registered for competition until 1st January, 2016, which covers any official match with a referee.