In the past, I had a record of my players on their training efficiency and performance. As old training system and menus is simple, I could roughly calculate average e training progress (or skill point) per each unit of condition for each player in different star level (training slows down when a new star is added). This was a time consuming task. So I have stopped for a long time. believe that this can also be performed under new system now. However, I believe the new menus design makes this task even more difficult.

BTW, for very new manager's information, player value/wage ratio greatly varies for different qualities. As I remember, for the fastest training players in the lowest level, the ratio could be 40x or even 50x. Now, for my players in teams in level around 30, the ratio for all players are about 2x-3x only.

In fact, it is not too difficult to identify fast trainers in market. But it is almost impossible to create a simple model to accurately rank them.