Barcelona have asked permission to register Arda Turan immediately to replace the injured Rafinha.

Turan and Aleix Vidal signed for Barcelona in the summer despite the transfer ban that FIFA imposed on the club after they were found guilty of breaching the governing body's rules on the transfer of players aged under 18.

Under the ban, the players would not be allowed to register to play until the January 2016 transfer window, when FIFA's ban is widely reported to be coming to an end.

Under FIFA's transfer rules, clubs can sign additional players outside of the transfer window if a registered player will miss more than five months of action.

Even if Turan's registration is approved, he would not be able to play for Barcelona in the Champions League group stage.