In relation to Fm:
The players with higher potential ability have more chance to obtain a work permit.
The most important criteria is playing competitive (not friendly) international matches. During the two years preceding the date of application, a player must have played for his country in at least 75% of its competitive A team matches he was available for selection. If the player isn't selected for the international matches due to suspension or injury, this will be taken into consideration when applying the criteria.