Nagao has three years left and LL doesn't graduate until next year. As I see it LL redshirts Nagao's Jr year and then Nagao bumps to 141 for his Sr year to make room. I also think it LL won't matter with Lagao because LL looks like a career 125 guy, it's the other guys like Howard, Davis and Gibson who will be battling for a spot.
My prediction is:
2023
Davis-Redshirt
125-Howard
133- Nagao
2024
125-Howard/Davis
133 Nagao/Howard
2025
Gibson and LL redshirt
125-Davis
133-Howard
141-Nagao
When you factor in the inevitable injuries I think they'll be able to make everybody happy. A lot hinges on Howard and if he can ever get healthy.