Media reports have circulated that Lilly won't return until late April or early May.
"I talked to Mark O'Neil [trainer] last week, and he said he is coming along fine," Hendry said. "If he starts April 15 that will be fine. I don't see it being anything unless there is some kind of setback that happens in camp. It was a real minor procedure. In fairness to Ted, we're not going to rush him either. If he's 95 percent on Opening Day then we will wait until he is 100 percent."
Lilly, entering the fourth and final season on his contract with the Cubs, tied Randy Wells for the team lead in wins last season with 12. He is 44-26 in three seasons with the Cubs.
Bruce Levine covers baseball for ESPNChicago.com.