I think you're exaggerating the impact of Waddle's contract. If we traded for him, the rest of this year is pretty irrelevant financially as we only take on the remaining portion of his $1.17M salary.
For next year (2026), we'd take on his $1.215M salary, $510K per game roster bonuses, $100K offseason workout bonus, and have to pay him a $15.416M option bonus. That option bonus would be spread out on the cap from 2026-3030 so it only counts just a but over $3M on the cap in 2026. His total cap number for 2026 would be under $5M. In 2027 you'd have Waddle's $23.4M salary $510K in per game roster bonuses, $100K workout bonus and another $3M of that option bonus proration, so it's a huge cap number. In 2028 it's same basic cap hits except salary jumps to $25.8M.
It's pretty easy to make that work around Boutte extension and Diggs. You extend Boutte this offseason and pay him a signing bonus. The proration of that into 2026 cap is likely insignificant and so is Waddle's cap hit. So 2026 not an issue. 2027 you structure it so rather than a salary that counts on the cap all that year you pay Boutte a roster bonus that you can amortize over the deal, so his 2027 cap hit stays pretty low to balance Waddle's. Then in 2028 when both of them have high cap hits... Diggs contract is off the books anyway.
So it's really just 2027 that yo get a little heavy on the investment at WR but it's offset by Maye still on rookie deal anyway.