First of all lets look at what we have and who will leave.
Defence: out for sure is Barzagli and Caceres most likely. So one CB will arrive for sure, maby one young like Romero to take Caceres place.
Targets: Manolas, Ruben Dias, De Ligt, Alderweid, S.Savic, Koulibaly, Umtiti
Midfield: Emre Can, Bentancur, Ramsey will stay 100%. Matudi I belive stays 90%.
Left is Pjanic and Khedira, Pjanic could leave, 1. He wants to try another leauge, 2. We need cash for another big CM signing like SMS, Pogba or Ndombele.
Khedira is older and had alot of injuries maby the club want to move forward with someone else.
Attack: Ronaldo, Bernadeschi 100% stays. Kean IMO 90 % just need to sign a new contract.
The club and Allegri loves Mario so 80% chanse of staying. Cuadrado im not sure about, but his price is not so high because of injuries and age, I believe the club will keep him, can play in many positions.
Big questionsmarks on Dybala, Douglas Costa.
The transfers in attack will depend on who leaves. If we sell Dybala or Douglas Costa (or both). Only then would I expect expensive players like Chiesa, J.Felix, Icardi.
The question is, could we affort a mercato with expensive signings without selling players like Dybala, D.Costa, Pjanic, Alex Sandro.
Khedira, Mandzukic, Cuadrado, Rugani would be my choices, but would they generate enought money? Lets not forget Higuain who we need to sell, who would want him?