Neither player will sign with an agent before the early withdrawal date, the Hoyas said Friday, which means they will retain NCAA eligibility should either or both decide to return to college.
"Both young men have worked extremely hard to position themselves for this opportunity," coach John Thompson III said. "They have begun a process of information gathering which is necessary for them to make educated decisions."
The early withdrawal date is June 18. The draft will be held June 28.
Both players would likely be lottery picks. Thompson said earlier this week that Green and Hibbert wanted to get an idea as to how high they would be picked before deciding whether to turn pro.
Green was the player of the year in the Big East and most outstanding player of the NCAA East Regional this season, and his versatility would make him a coveted player in the NBA. The 6-foot-9 forward led the Hoyas in scoring (14.3 points) and was second in both rebounding (6.4) and assists (3.2).
Hibbert, a 7-2 center, could become a strong post player in the NBA but still needs to polish his game. He led the Hoyas in rebounds (6.9) and averaged 12.9 points. He also blocked 90 shots.