According to this site, McDermott made just under 3M (assuming base) in 2023.
Explore Greg McDermott's 2025 salary, contract details, and net worth, with an emphasis on his contributions to Creighton University's basketball success.
collegefootballnetwork.com
The article makes clear this doesn't include any outside income, so it's probably not a major stretch to say close to $4M is a reasonable estimate for McDermott's "all-in" compensation.
Meanwhile, Woodson's salary (again, assuming base here) was reported in 2023 as 4.2M.
McDermott doesn't strike me as someone who'd live an overly lavish lifestyle (grew up on a farm in Northeast Iowa), and I would imagine you can live in Omaha on 3M a year VERY comfortably, so I'm guessing it would probably take a substantial raise to convince McDermott to jump from Creighton. I can't speak for anyone but myself, but I'd probably be asking for $5M to compensate for leaving a good and comfortable situation at Creighton for Indiana.