So when Foden (for example) is 18, having been with City for three years since he was 15, does he not count as club trained at that point? Why does it only kick in at age 21?It's the same.
Club trained or association trained are 2 types of homegrown. Club trained is 3 seasons between 15-21 at your club, Association trained is the same but in any club in your country, so Sterling, Delph, Walker & Stones are Association trained. Maffeo, Foden & Brahim will be club trained when they turn 21.