Ihedigbo left the facility without having signed a contract, but he indicated that a deal is close and that he expects to join the Lions.
"That's the plan in hand," he told the Detroit News on his way out of the building.
Ihedigbo (6-foot-1, 214 pounds) is coming off a career-best season with the Baltimore Ravens when he was second on the team with 101 tackles and also had three interceptions, two forced fumbles and one fumble recovery.
Ihedigo has strong connections to the Lions' new coaching staff.
Teryl Austin, Detroit's defensive coordinator, was his secondary coach the last two years in Baltimore while Jim Caldwell was the Ravens' offensive coordinator before taking over as the Lions' coach.
Miami's Chris Clemons also has been considered a possible free-agent target to fill the Lions' void at safety.