Alex's stalled move to Chelsea came after he ignored club advice, it has been revealed.
The former PSV Eindhoven defender returned to Rio de Janeiro on Sunday after an immigration official at Heathrow refused to allow the 25-year-old into the country following an administrative mix up.
The Daily Mail says Alex ignored Chelsea's advice to walk through customs as a visitor and instead filled in an immigration card, which should have been supported by a working visa.
Without the appropriate stamp in his passport, the defender was stopped by customs chiefs and told that he must enter the country as a visitor.
Although they are confident the appeal will be successful, they are baffled by the defender's decision to ignore their advice and return to Brazil.