A total rebuild implies there are no pieces at all that you can build around. While they won’t win the SB, this team does have some talent.
1. Get a real HC. Daboll, Roman, whoever so long as they are competent. Surround him with a competent staff. Jury is still out on Desai. Get a proven and hopefully younger OC. Bringing in a supporting staff is just as important as the HC and is often overlooked.
2. Players to keep: J Johnson, Quan, Caleb Johnson (I think he needs a shot-instinct tells me he can be very good), Mack or Quinn, Nichols, Tonga, Daniels, Jenkins, Borom, Kmet, Mooney, Monty, Herbert, Fields.
3. Players to shop: Arob obviously before 11/2, Eddie Jackson, Goldman, Quinn or Mack (free up cap-1 of those salaries needs to go to OL), Whitehair (or post 6/1 cut), Foles (please).
4. Invest heavily in the OL. Draft or sign a real C. Go after a proven LT like Armstead. Draft a G early. Jenkins at RT with Borom the swing T.
5. Godwin or another high quality FA WR.
So not a total rebuild, but these steps should at least put them on a path for success.