I've brought 3 players through my academy properly. I'm not including the ones I just sell for money and although they are not fast trainers they do train pretty fast. Anyway those 3 players I've brought through who I've put a bit of effort into I can honestly say they have been 3 of my best ever performers and they last for quite a long time. I had a dl who always used to get 9s and 10s mainly 9s but for a defender that's pretty good. Had another defender to and a MC both high performers. I will add 2 of these players where hot prospects who I improved further in the academy and then using greens and the performance of those 1 was even greater. I'm gonna do same with this seasons hot prospect and I'll let u know next season. (also I may add and correct me if I'm wrong but u will not find a fast trainer in youth academy)