The African Cup of Nations begins on January 9.
FIFA regulations mean players called up for the tournament should be made available 14 days before the start of the tournament.
Salah would then be required to join Egypt after the Boxing Day match against Leeds United.
However, authorities from Egypt have confirmed a decision is yet to be made.
"We already received the request. It is still under consideration, and no answer has been given yet," Osama Ismail, spokesman for the Egyptian Football Association, told Ahram Online.
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