If Napoli is actually interested in defending the title successfully, they should actually think about bringing in players who will make the team strong. Defenders are obviously going to be very important for the team. Losing a really good player, like Min Jae Kim is obviously going to be big for a club that is defending the title.
There is no club that does not want to defend the championship title obtained last season. but, each team has different problems each season. Napoli, who have to change coaches and the arrival of new players, will make this season even more difficult to defend the title. Adapting this new strategy is sometimes more difficult for players to implement, this must be solved by the coach from the beginning.