You have Tom Wort, Ronnell Lewis and Jaydan Bird that are true freshmen and I can't see any of them RSing this year. According to the depth chart you have Reynolds in the middle backed up Balogun, but that will probably be Box. Then you have Keenan Clayton at the SLB backed up by JR Bryant and at the WLB you have Travis Lewis backed up by Jaydan Bird.
These are all from the depth chart that was updated over a month ago, so it's kind of guessing at this point. We have 5 seniors in that 2-deep, so getting field time for underclassmen will be critical. Even if they don't play on the defense I think it's still important to get players like Wort, R. Lewis, Bird and Franklin on the field. It can't hurt on kick coverage for sure.