NFL DraftScout has updated their rankings with the underclassmen declarations complete. Ignoring their top 15 (who won't likely be in our range) and following their rankings (and in no particular order of preference), I would potentially be "excited" about any of the following:
18. Eric Ebron, TE, North Carolina. 6'4" 245#.
19. Ra'Shede Hageman, DT, Minnesota. 6'6" 311#.
22. Justin Gilbert, CB, Oklahoma St. 6' 200# (only if Aqib Talib leaves).
27. David Yankey, OL, Stanford. 6'5" 314#.
29. Calvin Pryor, S, Louisville. 6'2" 208#.
30. Stephon Tuitt, DE/DT, Notre Dame. 6'6" 312#.
32. Travis Swanson, C, Arkansas. 6'4" 318#.
34. Trent Murphy, DE, Stanford. 6'6" 261#.
39. Kyle Van Noy, OLB, BYU. 6'3" 245#.
46. Jordan Matthews, WR, Vanderbilt. 6'3" 205#.
55. Lamarcus Joyner, DB, Florida St. 5'8" 190#.
61. Joel Bitonio, OL, Nevada. 6'4" 315#.
63. Kyle Fuller, DB, Virginia Tech. 6' 194#.
66. Louichez Purifoy, DB, Florida. 6' 190# (only if Aqib Talib leaves).
72. Troy Niklas, TE, Notre Dame. 6'6" 270#.
89. Weston Richburg, OC, Colorado St. 6'4" 300#.
91. Stanley Jean-Baptiste, DB, Nebraska. 6'2" 220#.
92. Ego Ferguson, DT, LSU. 6'2" 309#.
98. Daniel McCullers, DT, Tennessee. 6'5" 351#.
100. Billy Turner, OL, North Dakota St. 6'5" 310#.
101. Devonta Freeman, RB, Florida St. 5'8" 203#.
102. Keith McGill, CB, Utah. 6'2" 205#.
111. Bryan Stork, OC, Florida. 6'4" 312#.
151. Brandon Linder, OG, Miami. 6'6" 319#.
153. Brett Smith, QB, Wyomiong. 6'2" 206#.
168. Taylor Hart, DE, Oregon. 6'6" 287#.
171. Cody Hoffman, WR, BYU. 6'3" 210#.
184. Larry Webster, DE, Bloomsburg. 6'6" 249#.
197. Cameron Fleming, DL, Stanford. 6'6" 318#.
206. Brent Urban, DE/DT, Virginia. 6'7" 295#.
213. Richard Rodgers, TE, Cal. 6'4" 245#.
218. DeAnthony Thomas, XB, Oregon. 5'9" 170#.
220. DeAndre Coleman, DT, Cal. 6'5" 315#.
233. Storm Johnson, RB, Central Florida. 6' 216#.
238. Dri Archer, WR/KR, Kent St. 5'8" 175#.
239. Trey Millard, FB/H-Back, Oklahoma. 6'3" 253#.
241. Xavier Grimble, TE, USC. 6'5" 250#.
247. Zach Kerr, DT, Delaware. 6'2" 334#.
267. Justin Ellis, DT, Louisiana Tech. 6'2" 351#.
268. Jonathan Dowling, DB, Western Kentucky. 6'2" 198#.
281. Jeff Matthews, QB, Cornell. 6'4" 225#.
316. Colt Lyerla, TE, Oregon. 6'5" 250#.
555. Zach Bauman, RB, Northern Arizona. 5'7" 196#.
Near-binkies in bold.