There is other option : 4-2-3-1
Snap Filip Kostic from under Lazio nose, and put him as left wing. Compare to Witsel and Pjanic he still 28 years old, there is still a chance to offload him for something in the coming years. We will have him on the left wing (with Kean as backup), on the right wing Chiesa and Kulu as backup. Dybala CAM (backup Kulu and Fagioli) with Morata upfront (Kean as backup). and the bonus is we slightly ruin Lazio's mercato
Locateli and Rabiot/McKennie as double pivot in midfield. We didn't try to get Depay or Calhanoglu is a miss, both can provide some goals and assists (around 30 goal contributions per season) that really help the team play as we lack that left winger even with CR7 still in the club