LaMelo, Lonzo and LiAngelo Ball will sign with Jay-Z's Sports Management company Roc Nation Sports.
"This was a family decision," LaMelo Ball's manager Jermaine Jackson told ESPN. "This is now an extended family. They put together a beautiful game plan with Jay-Z. The basketball game is about to change. They are going to create something totally new."
Raymond Brothers will be the primary agent overseeing the Ball Brothers.
"We talked to several agents, but the family had good vibes with Roc Nation," Jackson told ESPN. "I've known Jay-Z since I played for the Knicks, but this is what the kids wanted to do. Jay-Z is a master at what he does. He's global. It's power beyond power.
"This is something that they are building from the ground up together. They are brothers and they love each other and that's how they roll. It's all love. They don't separate from each other."