I wasn't aware UT was in the market for slow, 200 pound, arm-tackling LBs. If I knew this was the case, I would have transferred and used my last year of eligibility at UT. I can even play at that standard.
Just kidding. (Well, sort of).
Best of luck to Dews. His athleticism, production, and offer list might not jump out at anybody, but Coach Jones and staff has done a wonderful job at spotting and evaluating talent thus far. I'll take Coach Jones' judgement on this one.
Also, I'm sure he will indeed be a greyshirt candidate for 2015 class. UT is in play for way too many elite 2014 LB prospects for them to have to reach and use a spot for Dews. He most likely showed out at camp and UT's staff wants to develop him for a few years before he makes any impact on the UT football team.