The quality of the player and their progress on training

[cracicot]

How could we know the player will have a high progress on their training. I used to know that the higher the price the higher the progress their will achieve. But I try it myself with new player I bought with age 19 cost 2.52m compare to my own player age 21 cost 1.6m and my player have the better progress on both matches and training. So what is the exact way to find out ??

You dont compare different ages with prices. You have to look at the market and see where your price for your 19yo comes in. 2.52m is half of what it should be at lvl 5 for a fast trainer.

go to the market, click on the top to organize by age and look for 19yo and that will give you an idea.