Freedom of scouting will always be a danger of conflict of interest.
You can never keep a player anonymous, no matter how good or bad he is, and that is a problem when fighting for a league, cup or b3 title if the person you face is the coach of one of your own players' nations.
In my opinion, the player's manager should have the last word, being the one who decides whether or not he goes to the national team, or if he wants his player to be reviewed by the team's staff.
I was already on several occasions against certain players of mine being reviewed, because I already knew that my training plan was not going to be linked to any type of interests for the national team and even so the staff reviewed my players without respecting my decision. to keep my players' skills anonymous.