What I would do is offer next year's 2nd rounder, and the following year's 1st rounder, as well as their choice of some highly picked non-difference-makers like Rapp, Tutu, etc. for him. But that won't be enough.
Once we get through this season though that 2nd rounder can be bumped into edge rusher range by using the next year's first rounder if necessary. And that is where Jackson filling LT could be a real saver, as not needing to worry about what we're going to do with LT takes a lot of pressure off.
Then you go get a couple OL with those 6th rounders to replenish the pipeline. Plus we have Bruss returning and hopefully making a year two jump.
So... To get there I would go budget with a RB trade right now and get this offense the piece it has needed for so long on the ground. Hunt > Montgomery > Gibson > etc just go down the list. We don't need CMC to make this offense go. We just need a real ground threat who can be there for the offense. Then I would look for a Fowler type edge addition and hopefully when done with those two moves I still have that 2nd round pick.