Jay Z has become "intimately involved" in the situation of Robinson Cano - the top free agent available in the MLB offseason, reports CBSSports.com.
The second baseman is testing the free agency offer after starring for the New York Yankees last season.
He is widely expected to command an offer in excess of $100m, and the 31-year-old has entrusted Jay Z's new sports agency to broker the deal.
Cano left super-agent Scott Boras in favour of Roc Nations Sport and Jay Z is said to be heavily involved in the player's affairs.
Although Brodie Van Wagenen is reportedly heading his negotiations, the rap artist was said to be "intimately involved in all areas" on MLB Network Radio Sunday.
Speaking about Jay Z's involvement Van Wagenen told the radio show: “That has been true for the last six months. It's certainly true now.
"Jay is a very, very successful businessman, who has a keen understanding of value, a keen understanding of brands, and a keen understand of what this player, Robinson Cano, wants to accomplish in his career.”
Van Wagen said that the 99 problems singer is much more than a figurehead to enhance Cano's reputation but has been able to contribute effectively to negotiation strategies and will continue to be involved when negotiations with franchises start.
“He's been at the table both in strategy sessions and in preparation,” Van Wagenen said of Jay Z. “And he absolutely has, and will continue to be, involved in the actual negotiations with potential suitors.”
“What I think people are starting to recognise as well is that players of this magnitude don't come along very often,” Van Wagenen said.
“And the opportunity to acquire them is limited. And when you want to try to acquire impact, middle-of-the-order, dynamic players, rare talent, you can only do it in a few areas.”
Cano has finished in the top six of the AL MVP voting for four seasons in a row.