Hilliard, nor his agent, Neil Schwartz, contacted the Giants to let them know the receiver would not be on hand.
According to the New York Times, Schwartz said "I know the camp is voluntary/mandatory, but it's really voluntary. After he gets some things taken care of, he'll start to concentrate on getting ready for training camp. I apologize to Coach Fassel for the lack of communication."
Fassel was clearly upset that Hilliard was not in attendance.