I don't think two firsts is out of the question honestly.
The Jets for instance had a top 5 defense in DVOA to finish the season and I believe about halfway through the season they were also in the top 5 in total DVOA. That defense is legit, they're solid on special teams, and have some solid pieces on offense. They've got an exciting WR room with Wilson, Moore, Davis...a couple of reliable TEs in Conklin and Uzomah. And Breece Hall was arguably the frontrunner for OROY before his injury. (And Wilson may well end up winning it himself...) So they may very well be looking at their situation and thinking "We did pretty decent still with Wilson/Flacco/White" and could certainly see them looking at Rodgers and thinking this year was an outlier (Gutted WR room, semi-injured most the season, etc) and that he's the last piece they need to put them over the top.
For a team who I believe has the longest active playoff appearance drought (last made playoffs in 2010 IIRC) and the second-longest Super Bowl appearance drought (54 years, behind only the Browns and Lions who have never made it)...if you were in that situation and were firmly convinced that even one season of high-level QB play (and perhaps this is where Rodgers selling himself with "I can win MVP again in the right situation comes into play) is enough to get you back into the playoffs and make a push for the Super Bowl...almost everyone would happily give up two firsts for that chance.
Or for instance you could have mutual interest for the Raiders. Rodgers gets to team up with Davante and the Raiders can look back and say "Look at how good this guy was last time they played together". And so on...not saying it all totally holds up, but historically teams have been able to convince themselves of a LOT when they are in need of a QB...
That said I would suspect something like a 1st and conditional 1st would be more likely, or something like a 1st and 2nd this year and then a 2nd and 3rd next year or something like that.