The former reigning lightweight champ is back, as UFC Tonight reports that BJ Penn has not only signed a new contract with the UFC, but that he has agreed to drop down to 145 pounds to attempt to take on the man that took his belt. Frankie Edgar will now coach the next season of The Ultimate Fighter against “The Prodigy,” which will debut in Jan. of 2014 according to UFC president Dana White.

Penn may have lost two decisions to the scrapper and fellow former champ, but that he has the motivation to avenge to soured loss.

“He says, ‘I can beat Frankie Edgar,'” White said. “The two first fights were BS. I want that fight again. I want to beat this guy so bad. It’s all I want.”

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Edgar, of course, fought as a lightweight for the majority of his career. However, he made the drop to 145 pounds earlier this year for a failed bit to unseat champ Jose Aldo. In July, he bounced back with a win over Charles Oliveira.

Meanwhile, Penn is a former titleholder at both 170 and 155 pounds. However, the fight with Edgar would mark his first at featherweight, and if he could find a way to make a championship run, he could become the first fighter in UFC history to earn titles in three different weight classes.

Penn previously served as a coach on “The Ultimate Fighter 5,” which aired in 2007. “The Ultimate Fighter 19” is expected to feature light heavyweight and middleweight UFC hopefuls. Filming begins in Las Vegas in mid-October.