Not sure what you mean. Henry's salary is already guaranteed. If you turn their salaries to bonuses, the only way to get cap relief is for the bonus to be prorated to future years. In doing so, you push 2022 $ into 2023 and eat at that cap.
In Henry's case, if you turn $8M of his salary to a bonus, $4M of it would go to 2023. His cap hit would then go from $15M to $11M in 2022 and from $15.5M to $19.5M in 2023. His dead money would go from $5M to $9M in 2023.
Sure, his compensation doesn't change, but his cap # balloons to almost $20M.
That's what I believe they're trying to avoid, so imo, they'll seek addt'l cap savings via trades and cuts. That's all I'm saying.