Ultimate Fighting Championship President Dana White said Vitor Belfort is the most likely next opponent for Weidman "if he gets his business together."
White was referring to Belfort's inability to claim therapeutic-use exemptions for performance-enhancing substances.
Weidman (12-0) survived a compelling fourth round against Machida, when the champion was battered by strikes after having won the first three rounds.
"They kept telling me, 'That's another one in the book, that's three in the book,'" Weidman said of his corner, "but I said, 'I don't believe you,' I've got to keep moving forward, keep working, because I've seen a lot of decisions go the wrong way. I tried to stay focused on trying to break him."