And what's wrong with the older ones?

2 season ago i picked 2 31 Year old players both 5*, both with sa for 2 tokens a piece. They did very well, and are now 4 * and still playing regularly (i tanked last season). If i get one of these every season, for 4 seasons, instead of the youth guy, i'll be having a 5* player for 4 full seasons, by a cost still lower than a youth player.
Of course they won't be good for more than 1, 2 seasons at most, but still...

I signed 3 youth players so far. One is now 21 Y/O and is 4* trying to get back to 5*, even though i tanked last season. He cost me 24T. Another is 22 Y/O, 3* and only played first team part of a season were i was trying to get him up to 5*.

On my second team i signed one, this season, for 2 reasons: I got him on day 2, and i don't have time to look for players on that team, so as he was dual-position and for one spot i was in need, i decided to take the chance. Maybe i found a mix of circumstances where a youth player may be a good choice. I'll let you guys know in a couple of seasons.