The Ghana Football Association (GFA) has asked the injured duo of Abdul Majeed Waris and Jeffery Schlupp to report to the Black Stars camp in Spain.
Both players are to arrive in the camp by Wednesday.
Coach Avram Grant wants the two players to turn up at the Black Stars pre-Africa Cup of Nations training camp in Sevilla before he names his squad by the midnight deadline set by CAF.
Grant wants Ghana doctors to independently examine the status of their injuries as he prepares to name his final squad for the competition.
Turkey-based striker Waris and Leicester City defender Schlupp have been nursing injuries and have since not reported to camp since training started on Monday.
The Black Stars are preparing for the Africa Cup of Nations in Equatorial Guinea where they will face Senegal, Algeria and South Africa in the group phase.