Regarding line up I think it will feature:
Cillessen,Vermaelen,Vidal,Alena,Malcom,Munir ,Denis.
Likely we will go conservative with only 3 Barca B players. Only Miranda is sure to start IMO, leaving another 2 and those will be between Puig, Guillem , Chumi (or if we play 4 B players it will be all of them)
So something around that line up:
Cillessen
Guillem (Semedo) Chumi (Lenglet) Vermaelen Miranda
Vidal Alena Puig
Malcom Munir Denis