PIF deal covers the 2026 World Cup being cohosted by US, Canada and Mexico, while Saudi Arabia is hosting 2034 edition.
Goalkeeper Bento's bizarre injury-time own goal denies Al-Nassr a title-crowning 1-0 win over rivals Al Hilal at home.
Saudi Arabia will host the 2027 tournament from January 7 to February 5 and will face Palestine, Kuwait and Oman.