If Manuel starts week 1, he's the frontrunner for OROY. Woods also has a good chance. This is a very weak year for OROY candidates, no other QBs starting most of the season probably. Not many RBs or WRs appear to be in great situations either.
Alonso has a good shot as well, since DROY is highly slanted towards LBs who gets lots of tackles, and bad teams get the most tackles against the run. Like Kuechly last year, who was pretty bad most of the year, but led the league in tackles. However, there's Te'o, and if he gets 100 tackles, the media is riding that train.