i was wondering if u having so many of a nation of players at your club would persuade a player to join ur club for e.g. liverpool are mainly spaish so would a spanish player maybe pick them over another club due to this?
It'll be allot more likely if the player has "Favourite Personnel" at your club, that can be fellow players and coaches, also signing a player who doesn't talk the national language but can talk the languages of other team-mates helps him to settle quicker.
However, I don't think nationality alone can make a players decision to come to your club or not.