Hoke said today that De"Veon Smith had a bit of an edge over Derrick Green coming out of spring. Reminds that Drake Johnson back— angelique (@chengelis) July 29, 2014
Also, here is says it is mostly because of pass pro.
Per GoBlueinMN below (so give him a +1 for this info below; put in OP to allow discussion) and Nick Baumgardner on twitter, who also explains that others beside Norfleet will get a look at returns because the team must get better, and says Kenny Allen will now do kickoffs:
Hoke says Glasgow is going to play center. Sounded like his shuffling to other spots is going to slow down.— Nick Baumgardner (@nickbaumgardner) July 29, 2014