The market for DT has quietly risen pretty high these last few seasons.
Leonard Williams, a 30 year old guy who's really good but not quite a star, got $21M/yr on his contract. DJ Reader and Grover Stewart, two pretty good starting run cloggers, got $13M/yr. Raekwon Davis and A'Shawn Robinson, just kind of rotational-caliber run stuffers, got $7M/yr.
Let's say that Osa goes out and has another season like his last 2... lots of pressure, not a lot of sacks, and he stays healthy. If I'm his agent in 2025, I'm targeting a contract closer to Williams than Grover Stewart. My client is 26 years old, has no significant injury history, has 3 productive pass rushing seasons, and fits into a gap-shooter role on any defense. He comes with very low risk and gives you an instant inside-rush presence. I'm probably asking for 4 years in the $18M a year zone.