Barcelona have completed Vitor Roque signing finally for a 40 million euros transfer fee. He is only an 18-year-old centre-forward right now. He must be seen as a wonderkid that Barcelona allocated the money they can spend this summer for him mostly. However this transfer won't happen now. The deal is going to be completed officially and he will join the team by July 2024.
It is similar to what Real Madrid did for Endrick from Palmeiras. Not exactly the same though because Real Madrid have no choice other than waiting for him due to age issue in his country. These are all investments into their futures and I wonder which one of these players will develop more.
The two young players you mentioned have the possibility to become important figures for their respective teams, but they really have to work hard to break into the main squad. Both Real Madrid and Barcelona are likely to field both players next season especially after both are registered with La Liga, that could be in 2024.
I don't know how good the two Brazilian strikers are, but they seem to be the future strikers of their respective teams. Together with Endrick, Real Madrid will have 3 Brazilian strikers next season. I hope that the duet of the three Brazilian players can really bring Real Madrid a lot of success, but something different can also be expected.