The Bears had to have security escort defensive end Alex Brown from their practice facility on Tuesday. Brown, who spent eight seasons in Chicago, is now a member of the Saints. A Bears official said NFL rules forbid players under contract to visit another team's facilities. "We love Alex Brown," the team official said. "He's got friends throughout Halas Hall, but league rules don't allow us to host a player under contract at our facility. "He's one of the great guys. He's one of the top-notch guys who have come through in a long time."