The NCAA rule regarding player jersey numbers boils down to players are allowed to wear duplicate numbers, so long as they are not on the field at the same time.
Hopefully Marshall head coach Doc Holliday doesn't plan on using Davonte Allen and Neville Hewitt in the game simultaneously.
Although it is unlikely that the linebacker, Hewitt, would be on at the same time as the wide reciever Allen. So the brunt of the confusion will be more likely fall on the shoulders of an unlucky statistician, rather than Holliday.
Complete story from the Charleston Gazette
Number changes for @HerdFB: N Hewitt is now #6, M Johnson is now #24, D Manning is now #30, J Knight is now #84 & R Williams is now #92— Marshall Equipment (@HerdEquipment) August 3, 2014