The #1 jerseys are just for show. The people ordering the Bush jerseys are simply pre-ordering them and they will get the number that Bush will eventually wear. He can choose a number between 20 and 49. These are the numbers taken and the guys that have them:
20 Bellamy, Jay S 5-11 200 33 13 Rutgers
21 Craft, Jason CB 5-10 187 30 8 Colorado State
22 Thomas, Fred CB 5-9 185 32 11 Tennessee-Martin
23 Stoutmire, Omar S 5-11 205 31 10 Fresno State
24 Smith, Dwight S 5-10 201 27 6 Akron
25 McAfee, Fred RB 5-10 193 37 15 Mississippi College
26 McAllister, Deuce RB 6-1 232 27 6 Mississippi
27 Stecker, Aaron RB 5-10 213 30 7 Western Illinois
28 Bennett, Michael RB 5-9 209 27 6 Wisconsin
29 Bullocks, Josh S 6-1 207 23 2 Nebraska
30 Booker, Fred CB 5-9 199 27 2 Louisiana State
31 Thomas, Joey CB 6-1 190 25 3 Montana State
33 Joseph, Keith RB 6-2 249 24 1 Texas A&M
34 McKenzie, Mike CB 6-0 194 30 8 Memphis
35 Branch, Jamal RB 5-11 230 25 R Colgate
37 Gleason, Steve S 5-11 212 29 6 Washington State
38 Scott, Bryan S 6-1 219 25 4 Penn State
44 Karney, Mike FB 5-11 258 24 3 Arizona State
46 Schurman, Nate FB 6-2 247 24 2 Missouri State
47 Houser, Kevin LS 6-2 252 28 7 Ohio State
So, assuming nobody's cut, and he doesn't take a number in the 40s (because that would be laaaaaaame), it looks like it's either 32 or 39. I'd take the 32 and stop whining.