If he gets a place in the first team this (or next) season than really credits to everyone involved at the development of players and if so, it kinda shows that they have a different road for each player.
Unlike Miretti, Iling, Soule and Fagioli, Barbieri didn’t feature in any YL game as far as I know, neither for the U19 although he was young enough. Was bought for 2m from Novara beating competition of Atletico, went immediately to the U23 where he definitely struggled behind Di Pardo. And unlike all the other guys, didn’t go back and forward between the U19 and U23 but rather stayed there and gradually improved. Going in his third season at the U23 a loan was probably a very realistic option.
It remains very interesting to follow everything the youth sector is trying. Small side note here that both Mulazzi and Barbieri are used on both sides of the pitch, without a doubt the improve their flexibility.
The sheer volume of good young players we have remains astonishing. Fingers crossed