DeAngelo Williams

The knee injury that caused LeVeon Bell to miss the final eight games of the 2015 regular season could also end up costing him a game or two in 2016.

Steelers general manager Kevin Colbert revealed on Wednesday that there's currently no timetable for Bell's return, which means the All-Pro running back could miss the beginning of the upcoming season.

"There is no timetable coming from us when he needs to be ready for this. We can't even say he'll be ready for the regular season because we won't know that until he goes through the whole process," Colbert said at the NFL combine, via the Pittsburgh Tribune-Review. "His health and his ability to return at 100 percent is the most important."

Bell suffered a torn MCL and PCL in a Nov. 1 loss to the Bengals. The Steelers running back then underwent surgery five days later, which means 10 months will have passed once the 2016 season kicks off.

Related players: DeAngelo Williams

Bell is in a race to get ready by Week 1, but if he's out, the Steelers' running game is in the very capable hands of DeAngelo Williams. Prospective owners should be aware of the possibility that Bell is out for the first game or two (or possibly longer).