Napoli doesn't want to lose more players and has the same memories as they had during the summer and that's why they decided to extend the contract of some players. Matteo Politano is the player who joined Napoli from Inter Milan on loan in 2021 and his good performance made Napoli who make his contract permanent. His contract was expiring in 2025 but Matteo Politano extended his contract with Napoli until and he going to stay there for a longer time.
Matteo Politano even had some offers from Saudi teams but he decided to stay in Napoli.

Politano is indeed a crucial choice when key players are absent or injured and we often see him filling in as a winger or striker at Napoli. His performance could be said to be quite good in recent seasons and even though he sometimes comes from the bench, his impact sometimes also produces good results for the team.
He is currently 30 years old and is actually getting old and it seems that his agreement with Napoli is his last chance to stay at Napoli. After his contract ends, it is possible that he will leave for another team and does not rule out another possibility of joining a Saudi league team. I think this is the right decision taken by Pollitano because it is still too soon for him to leave Europe.