The solution for negotiations is very simple for me, just make us put players manually on the market this way we know that all players found there are from actual active members and we don't lose time. Remove the tokens we pay to Nordeus on top of the initial 8 or 9 Tokens and maybe some other improvement.
I think that is reasonable to say that 99% should be the max player you can buy from negos, otherwise this will kill the scout market and Nordeus isn't that dumb.