I'd like to see the staff he puts together. I went back and looked at all the recruiting classes for Arkansas and Mizzou while he was at both places.
At Arkansas looks like they only signed two 4* defensive players initially out of high school, but landed some nice players on the transfer portal.
2023 - HS: 4* CB TX TR: 0
2022 - HS: 0 - Transfer: 4* S Fl (from UGA), 4*CB TX (From LSU), 5* LB TX (From Bama), 4* EDGE TX (From LSU)
2021 - HS: 0 TR: 0
2020 - HS: 4* S OK TR: 4* ILB OK (From OU), 4* WDE KS (From Clemson)
At Mizzou it seemed to be a similar pattern of lots of high 3 stars, but the transfer data from back then is much thinner and it wasn't nearly as prevalent so the classes as a whole were rated lower
2019 - HS: 4* S MO TR: 0
2018 - HS: 0 TR: 0
2017 - 4* DT AR TR: 0
2016 - HS: 0 TR: 0
For me, recruiting has to be a bit of a concern and he will need to have a west coast guy as well as a top flight overall recruiter and a solid offensive guy. But I think all that shouldn't be impossible and he's had assistants that are now HC, most notably Josh Heupel at Tennessee.