It looks like he's already played with the U20s. He was apparently quite good at the U17 South American championships.
I've never seen the kid play, I can't say I know him - I vaguely recall some articles with him linked with big clubs for 70M, etc.
I will say this - his film is completely ludicrous. But it's still against kids. So I cannot possibly fathom spending 40M on a kid like this. That is just silly. But who the heck knows.
That Flamengo team is loaded. Barbosa, de Arrascaeta, and if Everton is out and Gerson is on his way to Roma, wonder if they'd put this kid in there.