He's old and late.
Maximize is a rush, you can't waste time.
A season is 4 months long and a season is 1 year of life for the player.
No matches means no trainings.
No trainings means no skills increases.
No skills increases means the failure in reaching CA 10.
At the age of 21 he will become CA 2 and the loss of bonuses.
At the age of 22 he will become CA 1.
He's LA 10 but he's valueless since he will never be CA 10.
He may be CA 8 with a bit of luck someday if you don't waste his time.