4. Lack of running back depth
Any team that loses a combination like Alvin Kamara and Jalen Hurd will be hurting the following year. Yet, having John Kelly in the backfield will ease that pain just a little bit. The depth behind Kelly is the real cause for concern. Sophomore Carlin Fils-Aime rushed for less than 60 yards total last season and is the second most experienced rusher behind Kelly.
Not having Dobbs to run the read option will hurt the versatility and options available to Jones on offense. More than anything, this looks like a developmental year for the Tennnessee offense. If Guarantano ultimately becomes the starter and shows potential then the Vols could really compete in the SEC East with a very good offense in 2018.
Freshman Ty Chandler could provide a quick spark but relying on a freshman is never a sure thing for any team. Other freshman like Trey Coleman and Tim Jordan could also get a chance to see the field but neither running back was more than a three-star recruit.