Black Stars head coach Milovan Rajevac will announce his first squad following his re-appointment next week.
The squad will face Zimbabwe in a World Cup qualifying doubleheader in October.
Rajevac's squad will likely feature regular faces under Charles Akonnor, as revealed by the GFA communications director.
“What happens is that three weeks before every game the coach submits his list,” Twum told Citi TV.
“CK submitted his squad on Sunday and he was fired on Monday, so as we speak there is a squad in mind."
Rajevac officially started work on Friday and has been tasked to qualify Ghana for the World Cup in Qatar next year.
Currently, the Black Stars are a point behind South Africa in Group G.
Also, the GFA expect Rajevac to win next year's Africa Cup of Nations in Cameroon.