If the transfer ban remains in place its all academic and we are stuck with this ailing squad. Anyway
If the ban doesn't happen I think the re shape might look like this over a few transfer windows.
Looking at the current squad:
Valdes - Is leaving
Pinto - Retire
Oier - Sell or keep as 3rd choice
Montoya - Not sure, he's a decent back up who deserves more playing time, but whether his is first choice material. Not sure.
Alves - I actually like Alves, but only against weaker teams. When we need defense he is risky, so I guess Sell
Puyol - Leaving
Pique - Keep as our main Defender. I still think he is worth keeping
Bartra - Keep as a back up.
Mascherano - I would actually keep Masch, but as a CDM in place of Song when we need to be more solid or emergency CB only. Not a regular CB.
Adriano - Keep as a squad player. He's a solid back up and scores legendary goals.
Alba - Keep of course.
Song - Sell
Busquets - Keep
Xavi - Keep of course, but I have to say we need to play him less IMO. He is just feeling his age now.
Iniesta - Don't need to say it. Keep the Don
Fabregas - I still like Cesc and I wouldn't mind him staying, but if we get a big price then sell.
JDS - Sell
Roberto - Keep
Pedro - Keep. I love Pedro, not always great but works hard
Alexis - Hate to say it but maybe Sell.
Neymar - Keep.
Afellay - Sell
Tello & Cuenca - Sell one and keep the other
Bojan - Bring back in
Rafinha - Bring back in
Deulofeu - Bring in and promote to first team action.
Messi -
Just the 351 goals so I'll give him another season if he doesn't want to leave.
So based on that promote the young GK for Barca B
Otherwise
2 GK
1 RB
2 CB +1 Youth CB
1 CDM
1 CM
1 ST
2 RW/LW