Mustafa Ameen has threatened to sue Amir Khan over allegations made by the British fighter in the aftermath of his defeat to Lamont Peterson.

Khan lost his WBA and IBF light-welterweight titles on a split decision to Peterson in Washington on December 10.

Ameen, an IBF affiliate who was ringside but had no official role at the fight, was accused by Khan of interfering with the judges' scorecards.

In an extensive interview with Sky Sports News, Ameen offered Khan a last chance to apologise before he starts legal action.

"Amir Khan is going to have to apologise," Ameen said. "I'm going to tell you that I am already in the process - you are hearing it first - I will litigate this.

"I am already in discussions with some of the most successful legal firms in Britain regarding the slander, the libellous statements that have been made against me by Amir Khan and other individuals in the press and I intend to fully seek a remedy in a legal form, in a court of law.

"I will give Mr Khan an opportunity. Prior to me reaching the point of no return and filing a law suit, he has the opportunity (to apologise)."