The 6-foot-9 junior center/forward sent a message via the Twitter social network Wednesday night regarding his status, which has changed from "alternate" to an official invitee.
As a junior, Lee averaged 6.4 points and a team-high 6.0 rebounds per game. He shot a team-best 68 percent from the field, the best figure in school history for a single season with at least 150 attempts. The long, athletic defender also averaged 1.6 blocked shots per game.
Lee announced his intention to enter the draft last month and indicated that he would likely hire an agent, although that has not been finalized. The combine will be held May 11-15. Under a new rule, players have until May 25 to choose to return to their respective schools, provided they do not hire an agent.
The draft will be held June 25 in Brooklyn, N.Y. Three UK players -- freshman guard Jamal Murray, freshman center/forward Skal Labissiere and sophomore point guard Tyler Ulis -- have also declared for the draft.
Kentucky is still awaiting word on whether freshman guard Isaiah Briscoe, another combine alternate, will enter the draft.