Seller wants to close in 3 days. Should I walk away?

I got what I think is a great deal on a 40-acre parcel in rural Texas, but the seller is suddenly demanding we close in 72 hours or he’s moving on. I haven’t finished my due diligence. Is this a red flag or just an anxious seller?

Have you asked them why they’re in such a sudden rush?

What else do you need to finish your due diligence?