I'd work the squad issue like this:
-Deulofeu and Rafinha promoted
-Roberto loaned out (perhaps to Espanyol) and Muniesa should be loaned out too
-Decrease the squad size by first taking out the complete unnecessary players (Bojan, JDS, Fontas, Keirrison, Afellay)
-Then maybe take out players who's transfers we would consider if a good offer were to come by (Alexis, Villa, Adriano, possibly Bartra?)
-Buy necessary players 1 CB, 1 FW
-Search around for secondary transfers (goalkeeper for after Valdes leaves in 2014, young backup CB, etc.)
-Keep Cuenca on loan at Ajax for another season
-Rotation is key for next season with tactical fixes to keep the players at top level
I'd say that'll take the squad size to a manageable level. The only issue is to see if Tito will trust the youngsters to play much more next season to rest senior players and get a more equitable distribution of playing time.