Al Nassr will have to let go of Ronaldo before they can recruit more Europe experienced players while paying them high wages. The influence of Ronaldo will make any player coming to Al Nassr to start demanding high salary because they can not be playing for only Ronaldo to be benefitting with high pay. Al Nassr need to work on their defense because they are conceding too many goals for a top club. They do not have any problems with scoring but their defence is not very solid. Al Nassr needs to buy winger too, they do not have to be Europe players but they should be skillful players that can score and supplying the strikers with balls to score too. Al Nassr has already lost this season title because Al Hilal would not let any team to pass them and take the title from them. Al Nassr not starting the season well has caused them the title this season.
The thing between Ronaldo and Al Nassr is even more than this. Al Nassr know they hire some players because of Ronaldo and if Ronaldo leaves Al Nassr maybe they will have problems with hiring more top-level players. Also, Ronalod wants to achieve something he is in Al Nassr and that's why he won't leave soon.
Also, it seems Ronaldo is going to make some investment in Al Nassr, and even his son is playing there, which can show Ronaldo is going to stay and there and even there's a high chance to him to get retire in Al Nassr.
It makes perfect sense to invest and make your child play. He wants to leave a legacy and still make money by making bets and investments throughout Arabia. For me it is a vision of the future and no longer of the player.