Makes more sense for him to sign for Madrid if you ask me. Güler, Rodrygo and co are rather easy competiton at RW. Lamine or him is a coinflip. For us it obviously makes sense to sign him, but would be even better if he was right-footed.
He plays as SS/AM for Palmiras from game compilation I've seen from him, rather than RW. Looked WC talent there.
Played back as RW during the U-17 WC and didn't stand out.
Don't think the RW thing is an issue, and surely not with Lamine.
Honestly, he has much higher potential than Lamine IMO, despite lower floor and the conflict in position isn't that much. Messinho will be more like Felix but with much more pace and ability to push the tempo.
If anything, Endrick is the main competition for him if he goes RM, left footed who isn't a true 9 whom Messinho didn't displace with Palmiras (being a year younger though) so it doesn't make sense to go to RM again. And tbh it seems Real already made the choice with Endrick
PSG is probably our main rival for the signing, France is appealing for Brazilians over England and cash flow is more than us.