Milan wants the Karen contact. If the preview for the finale is any indication once Truth & Karen enter into an agreement, Ghost is to be assassinated.
Karen is plugged in with the rich which includes folks that will likely spend money on the prescription drugs that Milan wants to begin moving. Remember the rich white housewife that wants to pop a Xanny that Ruiz doesn't want to learn how to deal with.
Ghost dies. Milan slides in and finesses Karen like he's done with everyone else. Milan would probably just say he bought Truth and the other 2 clubs outright and now he has an expanded clientele to sell his drugs to.
Y'all just keep complaining and not even trying to think critically