FULL STORY: RONALDO TEAMS UP WITH LIL WAYNE

Cristiano Ronaldo is about to become a YOUNG MONEY CASH MONEY BILLIONAIRE ... because sources reveal Lil Wayne is starting his own sports management company and Ronaldo will be client #1. 

Our sources tell us ... Weezy has been wanting to get into the sports management game for a while and has had his sights set on the Team Portugal stud ... not just because he's a huge sports star, but because they're friends. 
We're told Weezy's company will be working with Polaris Sports -- which is affiliated with the CAA agency and GestiFute -- through which Ronaldo's agent
Jorge Mendes operates. 

Our sources also tell us Wayne's company will handle Ronaldo's sports management affairs in the United States -- everything from branding to marketing and endorsement deals. Even modeling. 

Seems Ronaldo is pumped about the situation -- he just posted a photo with the Prime Minister of Japan along with other Japanese politicians ... and they were all throwing up the YMCMB sign.