You stated that if you’re an EU citizen and under 16, you can play for an academy of a country different from your country of citizenship. That’s incorrect, unless other conditions apply, which have nothing to do with your EU citizenship.Still not clear what you're saying incorrect to.
It clearly states that exception 2a, where the OP wife is moving there for non-soccer reason for a year to two years.
As for my particular case, I would have put my kid in Italy, where they are citizen and have family to stay with; thereby, not an international transfer. In any case I'm not sending my kids to Italy to live and play soccer....