This loan will help him out a lot, Not sure if he can make it to the first team but It sure beats his situation in Brazil from what I've read.
We have been following him since 2012, he showed some promise and Potential when he was playing for Brazil's under 16 Teams, Which got him his contract for Fluminese. But he was involved in a really Bad Car Accident and he got sick as well with hepatitis? and spent a whole year out due to it.
He Eventually Returned and finally got some games in For Fluminese but not enough to really develop and help his Mentality. Some Flu fans say he has Potential but his Mental strength seemed to be one of his weaknesses as in Not taking the game seriously at times.
With this chance of Joining Barcelona B it seems like he wants to take this seriously this time and hope he could convince Barca to buy him and hopefully Reach the Main team.