Non-Patterson KR options for Vikes

By most accounts, Minnesota Vikings rookie WR Cordarrelle Patterson has looked pretty strong thus far in his work in a Minnesota uniform (albeit in practices without pads). He may not wind up as a starting wideout in the base offense, but he does appear to be on track to be the team's kickoff returner this fall. But what if he hits a snag in his development (or gets hurt)?