Safety Danieal Manning hasn't been among the players to participate in the voluntary workouts at Halas Hall.
But his decision to report Monday morning was a surprise to many, including his agent.
Manning was unhappy with the $1.176 million, original-round tender the Bears offered him, which saved the club about $500,000. Had a team signed him away, the Bears would have received a third-round pick.
But that window has passed.
While he's still not signing his tender, Manning called agent Russel Hicks a few days ago and told him he wanted to head to Halas Hall.
"It was his decision. He just said, 'I'm in Chicago, over the weekend.' He said he was going in," Hicks said. "I was like, 'All right.'
Manning will sign a waiver that protects him, in case he gets injured while working out.
"We're still trying to see what type of contract is best for Danieal and best for the Bears," Hicks said. "We want to go in one direction, they want to go in one direction.
We'll just have to meet in the middle."
The Bears now have exclusive negotiating rights with Manning until June. The club could trade him for anything, but Manning would have to sign his tender first.
Hicks, though, expressed confidence that something will be worked out with the Bears.
"Unless they trade, he's going to be with the Bears next season," Hicks said. "I think we'll get something done.
"I'm confident we'll get something before then (June)."
More than anything, Hicks said, Manning just wanted to be around his teammates.
"He misses those guys," Hicks said.
Manning has been a versatile player for the Bears since being selected in the second-round of the 2006 NFL Draft, starting 40 games.