Andrew Gachkar, ILB (Back)
The WR and LB depth, which were the two positions that had the biggest spotlight on them in the preseason and come roster cut time, already seems like it might be an issue. Each of these four guys are also expected to contribute on Special Teams, and that's where them missing the game could have the largest impact.
Asher Allen, CB (Foot)
I mentioned in my game preview that the Vikings don't have the most talent at CB, and now their #2 and #3 CBs will be limping into this game. That might be even worse than their starting QB having a sore throwing wrist or the offense missing it's most reliable red zone weapon in Shiancoe.