Save up 300 greens. That's about a week and a half of saving rests. During that time, identify a player who's minimum 99% and has as few "gray" stats as possible. A young striker can be power trained to 130% quite easily, when you make it to this point, you should have spent about 200-225 greens. Be more specific about the drills at this point. Train his weaker stats, the ones that are grayed out. Needless to say your season will suffer through this phase. BUt you'll have a 140% bu the end of it. Repeat the process with a second player, preferably a young DC. Next season repeat process if you want.