Antonio Conte's success in coaching elite Serie A clubs is beyond doubt. He is a coach who has the ability to build existing strengths within the club. He will make changes according to his needs even if he has to sell Napoli's star player and replace him with Lukaku. I know it seems like it's not worth it knowing the quality of performance between the two but we can't force the coach to use players who he thinks don't really suit him while the coach feels that Lukaku really suits his style of play and this is what Conte wants as he wants to build his own squad.
We have to trust everything to the new Napoli coach, he knows what the competition in Serie A is like and he really understands what has to be done.