Could be, but I think they will keep Bartra. And Sergi Roberto. Cuenca could be loaned or sold in January, unless a forward gets hurt, because there will be too many forwards.
La Masia produces a lot more first division players than can fit on the small Barca roster. This is not a bad thing. Barca keeps the right ones. Last year Thiago, this year Tello, Montoya and maybe Bartra. Next year Sergi Roberto, then Deulofeu and Rafina later.
Thiago & Montoya are the only ones likely to be in our first team for years like Xavi & Puyol etc though.
Fontas is ok but far too slow to be playing CB for FCB. I wish him luck, hope he does well at Mallorca and builds on his career. Hopefully we can cash in on him in the near future.
JDS is never going to play regularly for the first team. He needs to leave to move on with his career. Like Fontas he is definitely good enough to be playing for a decent club but not FCB.
Tello & Cuenca are decent but I can't see either of them ever being more than a backup option for us.
Muniesa needs to recover and then prove he is not injury prone.
Bartra should be given a chance in the first team this season but it's not looking good for him at the moment.
Sergi Roberto has a chance but there is A LOT of competition for midfield spots.
Deulofeu & Rafinha and then Dongou, Grimaldo & Samper all have the potential to break into the first team over the next few years but I think Thiago & Montoya will be the only recognised first team members until this exciting generation start to come through.