I didn't make a screenshot at the beginning of the season, but I'll do it next season, cause I'll keep my players.

My best Players develop:

MC (my playmaker): 32%, 19 y.o., FT (gained 90-110 per pratice match): played only 33/48 games
GK: 31%, 20 y.o., non FT (gained only 20-32 per pm): played 46/48
ST: 29%, 20 y.o., non FT (gained only 25-45/pm): played 45/48
AML: 29%, 22 y.o. non FT (gained only 18-26/pm): played 43/48
AMR: 28%, 22 y.o. non FT (gained only 22-39/pm): played 28/48
DMC: 27%, 19 y.o. FT (gained 80-100/pm): played 44/48

I don't know exactly, what they gained at old training, but I think, it's okay.