The cornerback told "The McNeil and Spiegel Show" on WSCR-AM that he doesn't know if he will return to Chicago but is certain he won't change positions.
"I don't want to play safety anywhere," Tillman said Wednesday morning.
Coming off an injury-plagued season, the 33-year-old soon-to-be free agent believes he will be on an NFL squad in 2014.
"My gut is I will be on an NFL team next year," Tillman said. "Everyone knows how the process works. It's a business. If I'm here, sweet. If I'm not, that's business ... There's no hard feelings. I love Chicago. Chicago's been nothing but great -- great owners, great organization, great teammates."