The national teams of Germany and Japan have fake players in Football Manager 2017 due to licensing issues that Sports Interactive and SEGA have been unable to resolve through the years.
As a result there are certain files within the FM17 installation folders that prevent you from managing the aforementioned national teams and also exclude real players showing up in their rosters.
Fixing this problem is as simple as deleting these files, but you will have to start a new save-game for the fix to take effect.
Windows
Program Files (x86) \ Steam \ steamapps \ common \...
As a result there are certain files within the FM17 installation folders that prevent you from managing the aforementioned national teams and also exclude real players showing up in their rosters.
Fixing this problem is as simple as deleting these files, but you will have to start a new save-game for the fix to take effect.
Instructions
Go to:Windows
Program Files (x86) \ Steam \ steamapps \ common \...