Knox's agent told Sean Jensen of the Chicago Sun-Times on Tuesday that his client intended to play next season. On Wednesday, multiple sources with direct knowledge of Knox's situation told Vaughn McClure of the Chicago Tribune he is unlikely to do so because of the serious back injury he suffered in 2011.
Knox hasn't played since December 2011 and spent all of last season on the physically unable to perform list.
"He had to work himself back up to where he could even walk," former Bears receivers coach Darryl Drake told the Tribune. "He had to work to get himself up out of bed. Hopefully, he'll continue to work and get himself back to where he can have the quality of life that he needs to have."
We've seen a handful of players overcome tremendous odds to return to the field. Perhaps Knox will join that group, but the current assessment suggests football is an afterthought for Knox right now.
Follow Marc Sessler on Twitter @MarcSesslerNFL.