By Carlos Costa, notifight.com

Panama's Celestino "Pelenchin" Caballero is training hard with Jeff Mayweather, as he prepares to challenge the "regular" World Boxing Association (WBA) featherweight champion Jonathan Barros on June 18 in Menoza, Argentina. Caballero says he is "counting down the days" until he faces the champion in his backyard.

Caballero wants to bring his career back on track after suffering an upset decision loss to Jason Litzau in 2010. He moved up to super featherweight and got outhustled by the larger man. Last month, Caballero watched his career rival, Juan Manuel Lopez, lose his WBO title when he was knocked out by Orlando Salido in eight rounds. Caballero took the high road by not attacking Juanma for the upset loss, but he doesn't believe their fight will ever happen.

"Anyone can have a bad night. Juanma is young, strong, very fast and hits hard. He beat my friend, the great champion Gerry (Peñalosa). In addition, Juan has good boxing technique. I did everything I could to attract his interest to take a fight with me. But our fight will never happen. I wanted to fight Juama because I know that he's a quality fighter. Now my mind is only focused on Barros. He is my top priority and I'm not thinking about anyone else," Caballero said.