Broncos can free up a lot of money because they have a lot of contracts with no guaranteed money... Either trade away players or restructure them while opening the door to simple cuts... If both the Packers and Broncos agree on a trade for Aaron Rodgers which is the only way this works they can do a sign and trade for Davante Adams, or Adams can go directly to Denver and sign with them because the Packers are way over the cap to even fathom on tagging him...
A player the Broncos could put in this trade would free up $12 M is receiver Courtland Sutton...
Another player and another receiver is Tim Patrick would free up $ 8.5 M
Need one more to offset Aaron Rodgers $27 M incoming ok one more, Ronald Darby $9.8 M
Plus draft picks of course but Denver could make that trade happen even with being over the cap...
For the Packers those players coming in they would have no dead loss in simply cutting them or if they like restructure those contracts to alleviate some cap relief of their own... To lose Adams but get Sutton not a total loss but allows them to sustain moving forward... They would be likely team to draft one of the top receivers in the first round to pair with Sutton and Amari Rodgers as there are no other receivers under contract, that is why I posted Tim Patrick in this hypothetical trade scenario to match money...