Chelsea's performance last season was very poor. And so they want to rebuild the team. One of the reasons for Chelsea's erratic performance was the poor bonding between the players. So Chelsea's new coach is keen to sell old players to form the team he wants. I expect Chelsea to perform better next season than last season even after selling Lukaku.
It's true but last season they took the beating of the owner's change
Abramovich had to leave the team property in a hurry
which was certainly not healthy for the team itself