It´s fine to keep Rovella if Rabiot stays and Paredes doesn´t come. But will Allegri trust the kids and play them regularly? To keep Rovella/Fagioli etc only to play Locatelli another year as a full time regista isn´t optimal IMO.
We need a natural starter at regista this year, I´m not convinced by Locatelli in that position for another whole season. Especially in the big games.