Lawyers for former NFL superstar Jim Brown and a Bohemia sports memorabilia business told a federal judge on Tuesday that they haven't been able to settle a dispute over the ex-fullback's 1964 championship ring and a January trial remains possible.

"We have gotten very very close, but we don't have an agreement," William Fried, the lawyer for auctioneer Lelands.com, told U.S. District Judge John Keenan in Manhattan.

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Brown, a Manhasset High School star who played for the Cleveland Browns in the 1960s, claimed in a 2014 lawsuit that Lelands was auctioning off a stolen ring, and its owner defamed him by suggesting that he was suffering memory loss from concussions. Lelands claims it has proper title through an ex-wife of Brown.

Keenan told the lawyers to work with a magistrate, who will try to mediate the lawsuit. Brown's deposition is scheduled for November.