<Li> They are at least 22 during the calendar year of the draft . </Li> <Li> They have signed a contract with a professional basketball team outside the NBA within the United States, and have played under that contract . </Li> <P> Players who are not automatically eligible but wish to be drafted must declare their eligibility no later than 60 days before the draft . After this date, "early entry" players may attend NBA pre-draft camps and individual team workouts to show off their skills and obtain feedback regarding their draft positions . Under the CBA, a player may withdraw his name from consideration from the draft at any time before the final declaration date, which is 10 days before the draft . However, the NCAA adopted a rule that took effect in August 2009 that requires players at its member institutions to withdraw no later than May 8 to retain their college eligibility; the first draft affected by this rule was the 2010 draft . In 2011, the NCAA shortened its timeline for players to withdraw and retain eligibility to one day before the start of the spring signing period for men's basketball, which occurs in April . The NCAA changed its withdrawal rule again in 2016, effective with that year's draft; its withdrawal deadline is now in late May, specifically 10 days after the final day of the annual NBA Draft Combine . </P> <P> A player who declares for the draft will lose his college eligibility, even if he is not drafted, if he signs with any agent . Before 2016, the NCAA only allowed a player to enter the draft once without losing eligibility, but current NCAA rules now allow players to declare for and withdraw from multiple drafts while retaining college eligibility . The CBA allows a player to withdraw twice . </P>

When do you have to declare for the nba draft