Alex Rodriguez apparently hasn’t paid his old legal bills, so he’ll be getting some new ones soon.

Veteran sports attorney David Cornwell, who represented Rodriguez in his 2013 Biogenesis doping battle, intends to sue Rodriguez next week for nonpayment of roughly a half-million dollars in legal fees, the Daily News has learned.

According to two sources, Cornwell and his Atlanta-based firm, Gordon and Rees LLP, recently notified Major League Baseball and the MLB players union about their plans to file a suit next week in U. S. District Court in the Southern District of New York.

Cornwell declined to comment when contacted by the Daily News, as did Rodriguez’s spokesman, Ron Berkowitz.

The Daily News reported in April that Rodriguez was demanding discounts from some of the lawyers, private investigators and public relations experts who formed his high-priced team after MLB commissioner Bud Selig suspended the Yankee third baseman last August for the entire 2014 season.

According to one baseball source, A-Rod has told friends that he believes he was ill-served by his team of advisers. If Rodriguez uses malpractice claims to justify withholding his fees, however, he will effectively waive the attorney-client privilege, potentially exposing even more of his dirty laundry.

“If Alex Rodriguez claims he shouldn’t have to pay his attorney because the attorney gave him bad advice, it seems likely that a court will allow the attorney to tell the world what Alex was telling him at the time he gave the advice,” said Daily News legal analyst Tom Harvey. “The Code of Professional Responsibility specifically provides that a lawyer may reveal confidences or secrets necessary to defend against accusation of wrongful conduct.”