So basically one of two things happened.
1) These guys took Ballmer for $50 million. They immediately turned around and gave $48 million of that money to Ballmer's star basketball player. Con men are usually pretty generous and giving, so that could be.
or
2) Ballmer paid these guys a $2 million fee to funnel $48 million to his basketball player to circumvent the salary cap.
Steve Ballmer denies allegations of Kawhi Leonard, Clippers circumventing salary cap