The Major League Baseball Players Association is investigating Jay-Z, who is the founder of Roc Nation Sports Agency, for gifts he gave one of his clients, Robinson Cano, during a birthday party for the Yankees free agent second baseman this past October.

According to ESPN, sources say that the MLBPA is investigating whether Jay-Z violated union regulations for agents when he gave Cano the gifts.

Included in the gifts Hov gave Cano during his Oct. 22nd birthday bash in Belgium was a limited edition gold “Shawn Carter” edition Hublot watch worth $34,000 and is one of only 100.

The rule the Hip Hop Mogul is being investigated for is Section 5(B)(5)(a) of the Players Association regulations, which states… via ESPN:

“No Player Agent or Applicant shall provide, cause to be provided or promise to provide, any money or any other thing of value to any player, or any person related to or associated with such player, the purpose of which is to induce or encourage such player to use or continue to use any person’s or firm’s services as a Player Agent, Representative, or Draft Advisor.”

As ESPN states the rule is in place to “ensure that players choose their representatives on merit rather than what the union calls improper inducements.”

It is also noted that there is a clause allowing certain gifts if the player was already a client of the agent; however, any gift exceeding $500 must be disclosed to the union in writing.

Sources said that the Players Association has interviewed several of the parties involved and that Jay-Z could be subject to unspecified discipline if he is found in violation.

You can view the ESPN News report, and a photo of the limited edition gold “Shawn Carter” edition Hublot watch below: