The Facts: The saga of Best's attempt to return from a concussion that ended his 2011 doesn't appear to be over. Multiple people within the organization are concerned the second-year running back might not play football again, according to MLive.com.

Diehards Line:Best missed most of the season following an Oct. 16 loss to the San Francisco 49ers and was bothered by post-concussion problems the rest of the season. But Best, who also suffered a concussion during the preseason and had a scary head injury while at the University of California, Berkeley, told the Detroit Free Press earlier this month that he's symptom free and "definitely" will be back next season. The feeling from within the Lions appears to be quite different. It's going to be a situation worth watching in coming months. We'll obviously have more as developments warrant.