The NFL’s 
Junior Rule prohibits NFLPA advisors from communicating with a college athlete or any person in a position to influence that college athlete until said player is eligible for the NFL Draft. From April 10, 2007 until March 25, 2009, the prohibition lasted until an underclassman who applied for special eligibility was placed on the NFL’s official published list that goes out in the middle of January each year. But now, agents can start contacting early entries a little bit sooner.
As of March 25, 2009, the NFLPA is allowing certified agents to contact potential early entries after their last regular season college or conference championship game (excluding any post-season bowl game) or December 1, whichever is later, of the college football season immediately prior to the year in which such prospective player would be eligible to apply for the NFL Draft (basically the Junior year in almost all cases).
This will allow NFLPA advisors to talk to players as much as 6 weeks earlier than they were able to in the past (according to the rules).
