Probably multiple factors.
And although i'm loosing all my games, i do score high with the fans that they are aware who my topplayers are and are not afraid they they will be transferred (score of 4,5). Could it be related in some way with the fanshop income?
Furthermore, my PF plays in the Brasil NT and i have several Belgian players.
In any case, whatever the reason is, i don't believe it's random and there is a logical explanation.