The Foxes had signed a deal to add the Portuguese midfielder to replace Danny Drinkwater, but FIFA is not allowing the transfer to stand.

Leicester City had already agreed to sign Adrien Silva away from Sporting Lisbon, with all the money being wired and all paperwork in place. Nevertheless, their deal could be ruled out by FIFA, since the deal was reported to football's governing body 14 seconds later than that of the Transfer Deadline Window.

Even if the former EPL champions had announced the transfer subject to international clearance, FIFA has pulled the plug on the transfer, as the paperwork arrived late to their headquarters. Despite the announcement made today, the Foxes will appeal the decision to have the player around.

Silva's failed transfer could represent a problem for Leicester City, as they had already transferred the money to the Portuguese side. Furthermore, the player could be forced to return to his former team while the deal reaches a final decision.