By Jhonny Gonzalez
Former champion Celestino Caballero will head back to Panama on May 16 to finish his ongoing training camp. Caballero challenges "regular" WBA featherweight champion Jonathan Barros on June 18 in Mendoza, Argentina. Caballero is training in Las Vegas with Jeff Mayweather. He is reportedly training very hard and not far away from the featherweight limit. Mayweather is going to arrive in Panama on May 21.