I would gladly let Morata go and sign Scamacca.
I would rather sign Scamacca + sign some quality mid player rather than sign Vlahovic for double the amount and close mercato right away. If you have "a plan" of us selling 10 players and signing another 10, it's probably a FM wet dream and not realistic, because no, we cannot sign Vlahovic + another great mid player. Chances are high we can't afford only Vlahovic, let alone more players.