Manuel ‘Chango’ Vargas, 26-4-1, of Mexico is the new challenger for Nonito Donaire on Saturday night. Bob Arum announced the change today. Gerson Guerrero, who was scheduled to box Donaire, failed an eye examination and was removed the title card because of medical reasons. “I just want to fight – bring on anyone,” said Donaire, when told of the change. Donaire said he has been in training for over two months. Arum made the announcement during a press conference at the Las Vegas Hilton. He said Donaire vs. Vargas will be the main event for Top Rank’s Latin Fury 13/Pinoy Power 3 which is scheduled Saturday, Feb. 13.