It's not like he was tearing that level up though, even with rpl going into a notable decline over the last 3-4 years. He had his good breakthrough season in 20/21 when he started putting up insane dribbling stats and having some eye catching international performances, but was still obviously very rough around the edges and a lot of his better moments were coming against the bottom half of the table teams. Then he followed that up last season by being very inconsistent, looking like he was having a hard time adapting to now being paid more attention to by opposition gameplans. he didn't really get going all season until just before the war broke out.
I think a move to England or Italy a couple of seasons ago would have need to be very carefully thought out to go to a team that played the right way and needed a regular in the position, or he could very easily have got completely lost, and missed the development of at least playing regularly for a few seasons with RK before moving on. The start he has made at Napoli is a big step up in form from his last season, but it remains to be seen if he can maintain a good level for a long period of time. He's still a developing player and Napoli fans will have to take that into account.
And that is 5x price increase in just a year!