No one underestimates Antonio Conte, it's just that many people doubt that Antonio Conte can make an impact on the Napoli team that quickly, it's really an extraordinary thing when in just one season a coach manages to make changes and immediately win the title, it's really extraordinary and it also proves the quality of Antonio Conte's coaching.
So for now Napoli will be highly regarded not only in Serie A but also in European competitions because after Antonio Conte's impressive first season of course he will also do better next season, I think it's very likely.
Not only that, many people even think that when Conte lets Osimhen go, he will lose even more opportunities to bring Napoli to the best position but in fact it was the best decision as we see Napoli can win the Scudetto. Antonio Conte success certainly places his name a level above other coaches at least for this season, the next challenge is increasing when Napoli management wants better performance in the upcoming Champions League.
So far I have not heard any plans from Antonio Conte for the upcoming Champions League, honestly I think the current squad is not enough to compete there but yeah, there are still a few months to take action until the transfer window closes.