A new season is about to begin. That is the best time to buy young players for training.
So if anybody has a plan/room, it's worth keeping an eye on the player's market at the beginning of the season.
For Andorra NT, a player with a potential 7 (perennial allstar) is good enough. But I would suggest focusing on potential 9+ (mvp and up). Potential with 7-8 only if a player has very good starting skills.