the coding might be complicated, but the logic is to limit the players that a person wants to negotiate. don't allow a level 10 ~50 player able to negotiate with a level 1 player.
negotiate should be like getting a better player from a better team. you should be able to negotiate maybe players that are 3 levels higher than you and the players is a 6 star player to you, but to the higher manager it might be a 3 star player. (This might be a bad example, which i think tons of people have better ideas.)
in reality who wants to negotiate with another company for a worst player?
I mean negotiate doesn't even benefit nordeus, in fact, more people will quit the game eventually, or more people will abuse the mutants/exploits, and people will reduce buying tokens from nordeus.
Its a lost for nordeus either way.