Kelechi Iheanacho is one of the first products of a new youth development programme in Nigeria. He has played since U13 level and much like many of his U17 gold winning squad there are extremely talented. And honestly - at youth level I think the exposure to football kids have in Africa actually benefits them. The problem is proper training once the players hit 18+, not below.
His teammate Isaac Success is a starter in La Liga, albeit at a weak club, while Musa Yahaya (Tottenham) has yet to be 18 years old and isn't playing yet. You also have Taiwo Awoniyi (Liverpool), Chidere Ezeh (Porto), Dele Alampasu, Musa Muhammed, Saviour Godwin who are all doing decent despite their young age. I also think Chidiebere Nwakali who was also bought by Manchester City is a bit of a unheralded player due to his position.
This was a supremely talented bunch of youngsters and it looks like the next generations won't be any different. Kelechi Nwakali (Chidebere's younger brother) is tearing it up at this U17 World Cup and apparently he is also going to join Manchester City. Also Victor Osimhen is a truely powerhouse striker (7 in 4 at the tournament).
I just honestly think the future belongs to Nigerian footballers, but they have to build proper senior training facilities in Nigeria.