Cris Carter tells rookies: "You better change" Posted by Michael David Smith on July 1, 2010 8:46 AM ET Former NFL receiver Cris Carter spoke at the league's rookie symposium this week and told the young players on hand that they need to conduct themselves like professionals if they want to last in the league -- even if it costs them friendships along the way. In a video of his remarks at NFL.com, Carter can be seen discussing how NFL rookies should expect conversations with their friends to go. "Your friends start saying, 'Oh, man, I knew you were gonna change as soon as you got into the league,'" Carter said, before telling rookies, "Yeah, you better change." In comments that are especially important with the recent news that Mark Brunell is bankrupt despite making more than $50 million in his career, Carter told players to be smart about what they do with their paychecks. "You better watch your money," Carter said. "Because when you get old like me, you better know that you still got some money. You're the one out there making it. You're the one risking your neck." Carter also told rookies that they need to think about whether their family members really have their best interests at heart. "You're talking about people who can drag you down quick," Carter said. "Make sure you keep them in check."