To be honest, I'm not surprised that Rudi Garcia was let go by Napoli. And those whispers of player dissatisfaction? The squad wasn't exactly winning under his leadership. Anything like that is never good. They made the proper decision, in my opinion. Football management is a hard business, and occasionally adjustments are required. Currently, I'm not sure how I feel about Mazzarri's comeback. While his prior tenure may not have been revolutionary, winning the Italian Cup is nonetheless a noteworthy accomplishment. Perhaps now is his chance to return with new tactics and insights. This time around, he has a different squad, which might be the biggest factor. Before making assumptions, let's give the guy a chance
Mazzarri’s return should not be a big problem, he needs time to put the team together but he needs to be fast to show result on time to get the team back in the league as well. Expectations needs to be lowered for his return, he is not coming to perform magic overnight to make the team start winning immediately. Like you’ve mentioned, he now has a different team unlike before and this squad are more qualitative than the former ones he had coaches before, so they will expect nothing but results from him in a short possible timeframe. I am not expecting much from him this soon, but I expect with time he will adapt and bring out the best in this players and make the club takes its stand in the Serie A title race once more.