Dennard had accepted an invitation to last month's Senior Bowl but later backed out when he said his agent told him there was no need to play in the event.
The next step in the draft process is the combine, which he has been preparing for at the XTE facility in Boca Raton, Fla.
"I still feel like I have a lot to prove," he said. "There are some who say there are some flaws in my game, and I can't wait to prove them wrong."
Dennard (5-foot-10, 197 pounds) is considered perhaps the most physical corner in the draft, but there are questions about his speed and whether he will be able to play as physically in the NFL as he did in the Big Ten.