Nmecha twice reached the final with City, losing to twice to Chelsea.
He told City's website: In the Youth Cup there were a lot of good players in that team.
Brahim Diaz, Jadon Sancho and quite a few players who are still having good careers. Now is the time, I'm 25, they're like 22, 23, now they're starting to be seen a lot more.
We did really well. Chelsea, at that age, were still a bit more physically developed. A bit stronger a bit faster here and there.
We did well to get to the final, but in the final they were just better to be fair.
It's nice (to see former team-mates do well).
My brother is doing well now at Dortmund and the opportunities are definitely there and it's a good foundation (at City) technically and tactically for that type of football."