Inter Milan and Napoli they have to prepare for the Champions League next season. So it's not surprising that they really take advantage of the player transfer market quite well. Meanwhile, for AC Milan, they are also preparing their team as best as possible because they don't want to repeat the same failure as last season. AC Milan definitely wants to be able to compete again at the top of Serie A. So they have to make their squad worthy of this. They also have to support the new coach they have very well, namely by bringing in new players who can also be expected to improve the quality of the team.
However, it seems that many other teams in Serie A are not very active in bringing in new players. Or maybe they're just not in a hurry.
Napoli prepare teams quite well for next season will participants at UEFA Champion League after success signing Kevin De Bruyne with free agent after his contract expiring, seems Antonio Conte have received his clause option with Napoli's management spending much money for signing top players and keep stay as manager for next season. Overall, Serie A teams have difficulty with financial condition and every window transfer opening not sign top players such as recent recruitment from Napoli and Milan as free agent players.
Milan so far signed Luka Modric from Madrid after his contract not extended and waiting for next transfer release will sign top players or waiting for new recruitment as free agent player. Inter Milan looks quite silent after leaving by Simione Inzhagi and new replacement Cristian Chive not announce yet for new recruitment.