Well he was 20 when he played for Burnley and 22 when he played for us in the Prem, Centre backs tend to peak in their mid to late 20s, Van Dijk didn't play in the premier league until he was 24 for example, 2 years with us before getting his big move. I think he'll go on to become a decent, solid premier league player, not top 6 level but definitely to early just to write him off as not good enough.