Lukaku already shown that he could absorb tactical philosophy of Conte very well years ago and he will have no big problem to work with Conte again. Maybe with worse individual performances from Lukaku than before, Conte will have to adjust his plan, and use Lukaku in a different role that includes not only scoring goal task but supporting his team mates in different ways.
In the match with Parma Lukaku showed a great desire to score, he tried with all his might to show Conte that he wants to play in his team, I think that it is important for any coach to have players in his team who are ready to give their all. In some way, Conte will try so that Conte can remain the coach of Napoli as long as possible, because it is clear that he likes working with Conte, but this will only be possible if Napoli wins. Despite the bad start, Napoli are only one point behind Juventus and Inter, so far everything is not bad, and in the next round they will go to Cagliari, such an opponent Napoli should beat.