How much are they worth and how much they earn (wage)?
if u divide value and wage there must be high result
example:
2.000.000 value /(divide) 80.000 wage = 25 = slow training, not good
but
2.000.000 value / 30.000 wage = 66.6 = fast training, potential
this only work with youth player or player generate from nordeus but is accurate