By Rick Reeno

Multiple sources have advised BoxingScene.com that Amir Khan will not make a defense of his WBA junior welterweight title on July 31 in England, and his return will likely get pushed back to December. Options for December include Joel Casamayor, Marco Maidana and the winner of next month's rematch between Juan Manuel Marquez and Juan Diaz. 

Casamayor, who was under the impression that he would face Khan on July 31, will move forward with a summer ring appearance.  The former two division champion from Cuba had already started training for Khan, and obviously he is disappointed with the latest turn of events. Casamayor's manager Luis DeCubas Jr. was also informed that Khan will likely push his ring return to December.

"I heard the same thing as you, that he probably won't fight until the end of the year. Joel is probably going to fight again in July or August. We can't sit around and wait on this guy because he might pick Maidana or Marquez," DeCubas told BoxingScene.com.