In the winter just a extra player in midfield: Rabiot is maybe the best option regarding his contract. Cesc too but i don't know how good his performances are in England.
Spinazzola is back in shape and we have to give him a chance.
In the summer we should 're-young' the team. Nice options are Manolas (I think Benatia will leave), De Ligt, Kimpempe, Ndombele, Aouar, Thorgan Hazard, Sancho, Isco, Gomez (Celta De Vigo). If someone like Dybala would leave than they have to go for a really big 'fish'