We need wingbacks. Kostic stinks and theres nobody on the right besides mario. Pietrelli could be an internal option as hes been training with the first team, but thats just one guy. They need multiple.
Centerback just depends on how they view Djalo and if Rugani stays. Those are fine backups imo. So are Savona and Cabal.
Midfield is another issue. Need someone to push Locatelli, and who is Thurams backup?