Out: Masip, Banuz, Juste, Gafarot, Ilie, Ca, Espinosa, Roman, Suarez
In: Ondoa, Godswill, Tarin, Ortega, Munir, Halilovic
Pretty sure that Masip will go to a Primera side after being one of the best performers this season. With Ortola and Ondoa/Suarez in the goal I don't see any future for Banuz.
Unfortunately, Juste didn't have a chance to present himself in Barcelona. Campins and Godswill are both quite promising right-backs so having them alternate with Patric is certainly worth a shot. With Grimaldo being back, Gafarot probably won't see any minutes at all, so he'll probably be better off at another club.
If we don't want to repeat the same mistakes as this season, a new CB is a must. While Tarin didn't have his best game against Arsenal, he's still one of the most highly rated defenders in La Masia. He could develop quite nicely along Gomez, Ie and Bagnack.
Ilie has been disapointing for quite a while now and I believe the team would be better off if built around Samper as pivote. Ca's spell at Barca B was quite frustrating, he's more than likely to leave after his loan is over. Ortega could provide the necessary depth at DM and CB. Espinosa's contract seems to run out this summer and he might want to take a step forward by joining a Primera team. Halilovic could add a nice spark of creativity to the midfield.
Roman had one fine half of a season and that was pretty much it. Suarez is guaranteed a promotion, so there is a need for at least one winger/forward. Munir has been outstanding for Juvenil A and also did pretty well as a left winger on his B debut. With him, Adama, Sandro and Dongou, the front line looks very promising.
Tl,dr: the squad would look like this: Ortola, Ondoa - Patric, Campins, Godswill, Gomez, Ie, Bagnack, Tarin, Planas, Grimaldo - Samper, Ortega, Bedia, Calvet, Babunski, Halilovic - Traore, Dongou, Ramirez, Nieto, Munir