PaoloDNY
Youth Team
You will have to add the players manually to the playerlist.txr file using the below format:
Player ID Name Team
The file can be found here (backup this file before editing):
FIFA 14\Game\fip\boots\playerlist.txt
NOTE: Adding Gambia to the International pool will cause a crash in Career mode as the limit of 60 teams has already been reached.
But if I am not interested in career and decide to play friendlies only or make my own tournament, this shouldn't be an issue, right???... I just have to follow the steps you mentioned...