But you have not offered anything of substance to suggest the OL will be improved without him. It isn't feasible to find long term solutions for every single position so the logical thing to do is fix the areas in dire need. If after doing that you can improve at LG then fine but yes you are obsessed with this idea of moving on from Whitehair without any real evidence you can actually improve.
Like what is your actually proposal here. Who are you claiming is a significant improvement over Whitehair. How are you going to address C and RT, the entire DL, LB, CB, RB and WR? I would rate all of those spots as priorities over replacing Whitehair.
I literally said Elgton Jenkins by name in the post you quoted. In previous posts in response to you, I have named Nate Davis, Isaac Seumalo, Evan Brown from Detroit, and others. I didn't know I had to do a whole mock offseason for you to justify my opinion.
But anyway, Elgton is a no-brainer. Familiarity with Getsy, Packers likely can't bring him back and have had Zach Tom step up. Can play multiple positions so the Bears can add BPAs in FA and draft and let Elgton play wherever. But ideally, LG is his best position. Put him there. I'd also sign a mid level FA with G/C flexibility (Jon Feliciano, Daniel Brunskill come to mind). I've told you before I would keep Patrick. I'd use one of the first 2 picks on a RT (after a trade down). I'd love to add a developmental C on Day 3 as well, but depends on how they feel about Kramer. Either way, no harm in a Day 3 interior OL in general. So that gives you an OL of:
LT- Braxton Jones
LG- Elgton Jenkins/Brunskill
C- Patrick/Brunskill
RG- Teven Jenkins
RT- rookie (I like Anton Harrison of Oklahoma and Darnell Wright of Tennessee), Borom/Leatherwood
With Carter, Kramer and Diesch fighting it out for 8th/9th OL. Rookie at RT gets the job. If they want to spend on a C and get rid of Patrick, I wouldn't cry about that either. If they want to spend on a RT, I'd be fine with that too. They'll have money to do that and fix everything else.
As for the rest of the positions, I'd spend the money on the DL. Back up a Brinks for Payne. 22M AAV. 2nd highest paid DT to Aaron Donald. If he doesn't hit the market, there's Hargrave, DreMont Jones, and others. I'd sign multiple DTs. One at big money, over 15-18M AAV and another similar to Justin Jones level, preferably a big run stopper (Dalvin Tomlinson, David Oneymata, Greg Gaines, etc). Keep Jones, maybe keep Watts, add a day 3 pick.
At DE, I wouldn't spend huge money like Ngakoue or Davenport, but I'd get a solid starter similar to Muhammad but actually good (Omenihu, Ebukam, Rasheem Green), then I'd look to add a DE early. Obviously, if you stay at 2, Will Anderson mans the other end with Robinson and Gipson as backups. If you trade down and get an extra pick in the first 2 rounds, I would use them on OT, WR, DE in any order. Wouldn't hurt to add another cheap FA or late draft pick here either.
At LB, I'd add a stud. TJ Edwards seems like a no brainer here. In Philly where Ian Cunningham helped bring him in, college teammate and mentor for Sanborn. Way better than a Morrow level signing, not near the money you'd have paid Roquan. Also draft a guy here, late day 2 or early day 3.
CB is interesting. I wouldn't go big money here but wouldn't hesitate to add an 8-10M guy. I'd lean toward a guy with speed over a Rock Ya-Sin or Bradberry, though I wouldn't turn them down if no more than 10M AAV. Thinking more Cam Sutton or Emmanuel Mosely. Always love late round CBs, small school guys that can run and be developed. Chiefs have a history of such moves with Sneed, Keyes, and Fenton.
RB, I'd be looking to splurge. They probably aren't getting a #1 WR. They probably aren't going to try to replace Kmet or appease 2 TEs with enough receptions (Shanahan offense never throws to 2 TEs consistently) to sign a 1B TE. So, I'd look to really upgrade the weapons at RB. Barkley would be a pipe dream, if he's allowed to leave. I'd pay him highest RB in the league money though, IDC. Josh Jacobs, sure. Pollard, if on the market, give him 12-14M AAV. Lower end, give me Miles Sanders, Devin Singletary, Raheem Mostert or Jeff Wilson. Guy with more speed than Montgomery, who is a solid receiver out of the backfield but wouldn't take too many carries from Herbert.
WR, this is where a trade down would be good. I love Johnston from TCU, but Bears need a separator from the slot. Smith-Njigba would be nice. Zay Flowers in the 2nd. I'd be interested to see what Mecole Hardman gets in free agency. Not a great WR, but would add a nice speed element. Probably going to sign someone non-long term. I'd be interested on Zaccheus (ATL), Campbell (IND), Hardman (KC), Justin Watson (KC) if any would sign a 1 or 2 year deal for around what Pringle got.