Jay-Z is a businessman and a business, man
In early 2013, Jay-Z created Roc Nation Sports, a full-service sports management company, and the upstart agency gained prominence right away when Yankees star second baseman Robinson Cano parted ways with agent Scott Boras to be Roc Nation's first client. Since signing Cano, Roc Nation has also signed New York Jets rookie quarterback Geno Smith and current WNBA rookie Skylar Diggins, who led Notre Dame to the last three Women's Final Fours.
Three-time NBA scoring champion, Kevin Durant has also reportedly aligned himself with the new agency although he has not officially signed yet. Jay-Z cannot officially represent Durant, or any other player as of yet because he has not fully divested his ownership share in the Nets, but Juan Perez, the president of Roc Nation Sports, is also certified with the NBA Players Association and can do so in the interim.
That is the case with Smith as well, as Jay-Z is not yet licensed by the NFL. There was some controversy in the wake of Smith's signing, as the NFLPA began investigating whether or not the rap star broke the league's "runner rule," which says that anyone who is not certified with the NFL cannot recruit players, after Smith Tweeted a picture of him and Jay-Z together.
Kim Milae, Roc Nation's licensed NFL agent, will represent Smith for the time being while a decision is made.