Midfield IMO:
First half of season: Khedira, Kovacic,Pogba,Pjanic,Lemina,Sturaro, maybe mandragora. The rest sell.
Second half: Khedira, Chessio, Pogba, Pjanic, Kovacic, Lemina, Sturaro. Mandragora loaned if possible. Or keep him and use stu as a rb i dont care.
Sounds like a lot of players, but Khedira is injury prone, Marchisio will be coming from a long injury and Pogba cannot play everygame.
This way we make sure we are not depleted in case an injury crisis ensue like this year.