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Ronaldo has always been a player who has a very high scoring instinct even though he is no longer young, besides that we can see how he is able to become the top scorer in every club and also the league where he plays, al nassr failed to win the championship trophy last season but individual achievements still belong to Ronaldo, last season al nassr failed to win the league trophy but in fact he still brings a little pride to al nassr fans after winning the award as the top scorer in the league.
But even so I tend to agree with the perspective from @tiCeR which is indeed a team is required to have balance in every line of their squad to win the championship trophy, al nassr has good support in the front line in scoring goals with Ronaldo, Talisca and also Mane, but when they lead in a match, precisly the defense often a weakness which finally makes them have to throw away that the victory, But now slowly Pioli may be able to balance the Al Nassr squad, because after all, the strategy of the coach is also an important role for a team to achieve and maintain victory.
Despite his age, Ronaldo is still a striker with a typical high scoring instinct. Even if Al Nassr did not win any silverware last season, Ronaldo put in a great shift by lifting the top scorer crown, made the fans proud.
On the other hand, as @tiCeR said, balance is very important to win the title. Al Nassr has a powerful offense with Ronaldo, Talisca, and Mane. Still, weak defense, frequently tends to nullify their goals.
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Saudi sees football as a promising investment opportunity, a vision to reduce their dependence on oil. The move to build the Saudi Pro League by recruiting former top European players like Ronaldo is a genius effort, they will not lose by doing so. Likewise with the recruitment of other former top European players, simply put, their efforts must have gone through a very mature calculation stage before investing. With abundant financial strength, I think the Saudi Pro League will develop into one of the competitive and interesting leagues to follow, especially for the Asian region.
Personally, I see them succeeding, even the PIF has started to acquire top European clubs like Newcastle. This indicates that they have sufficient finances to maintain their existence in the long term. It is possible that in the future they will acquire more clubs, recruiting players and paying high salaries is an easy matter for them. Even top European clubs are now starting to have difficulty recruiting the players they are targeting, if Saudi clubs enter the competition, we know they are ready to offer crazy prices.
The fact that they are able to acquire the likes of Newcastle by PIF and former top European players and clubs shows that they can sustain their existence for a long period. Maybe in the near future they will also try to acquire more clubs to bring many top European players to RSL. With the super financial capability, Saudi can be eminently competitive in the transfer market place.