I have not tralled through 36 pages of suggestions so I wholeheartedly apologize if my suggestion has already been mentioned. When going into the player search you can select your assistant manager to filter out players he does not think will sign for you. My idea involves being able to change who does the filtering out. I think it should be possible for you to make your head scout do this for you. This should get a far better picture of players that will want to sign for you, than if your assistant manager does it.