Offensive needs:
1. Run blocking Center! Most runs by far went away from the center probably for a reason. The team is 30th in run attempts per game and 28th in totals rushing yds.
2. Future QB! Accept it or not, 20 TD to 16 ints is not acceptable regardless of reason, especially while leading the league in passing attempts. Besides, it's likely to take a few seasons to find that quality replacement.
3. G: A top level LG guard and/or RT (if Wagner leaves)to help re-establish a respectable run game (assuming Yanda goes back to his usual spot on the right).
Defense:
4. Edge rusher/run container! (Do I need to explain?)
5. CB capable of pressing from the line.