Well I'm not sure for other countries then england, because i mostly play with English clubs, the player needs to have 75% caps for his nation in past 2 years (for example if his country played 4 matches in last two years player must have played in at least 3) and that nation must be above 70th position in FIFA ranking list...
Well, at least that is in real life, not sure about FM but its probably the same, and don't know about other nations...google it
Well, at least that is in real life, not sure about FM but its probably the same, and don't know about other nations...google it

