I think in most of the top clubs the youth defenders that ended up making it mostly had to get the experiences elsewhere first. TAA probably the only exception?
Feels like the languidness in the U21s combined with the fact that most of them are injury-prone caused the general lack of progress of our defenders age 17-21, whilst those are the very crucial ages for them to develop, gain experience and prove themselves to have a shot at the first team.
Willy probably will need a loan next to indicate where he stands and whether we should give him more times at the club, considering he lost almost like 3 years of his development here.