Russian-born billionaire Len Blavatnik is close to snapping up Warner Music Group in a deal that values the company at $3.3 billion, The Post has learned.

Sources said Blavatnik’s bid is well above the next closest offer.

The Post reported this week that the auction for Warner had become a two-way contest between Blavatnik and two businessmen brothers: Tom Gores, who runs Platinum Equity, and Alec Gores of Gores Group.

Blavatnik, who already owns a 2 percent stake in Warner, is a board member as well as a close friend of Warner CEO Edgar Bronfman. Warner’s independent directors have hired a law firm to make sure they are protected should Blavatnik win and the bid be questioned, sources said.

A spokesman for Blavatnik had no comment, and a Warner spokesman declined to comment.

The board has yet to meet to decide the fate of the firm and insiders cautioned that any deal could still fall apart.