The president of Barcelona Josep Mario Batromeu is reported to have given the go ahead to start legal proceedings.
The reigning La Liga champions are serving a transfer ban which restricts the club from registering new transfers until January.
However, following the long-term injury to Rafinha Barcelona requested that Turan be allowed to replace the winger according to the Spanish newspaper Marca.
Speaking to Sport ex Barcelona president Toni Freixa claimed that his former side have already served the FIFA ban and are within their rights to appeal Article 123 of the Spanish Football Federation regulations which states that a player with a long term injury can be unregistered in place for another player.
“FIFA sanctioned Barcelona for two transfer windows, last winter and this summer, and they’ve since passed,” he told Sport.