This is $4.6m/yr average over the next four seasons for a potentially critical piece to the #1 thing circumscribing the franchise's success over the past decade. That is the good kind of cheaping out on on the OL.
To put that into perspective, here are what some other recent players have made here:
Gabe Jackson made $16m over two seasons
Dre'Mont Jones made $35m over two seasons
Will Dissly made $17m over two seasons after his rookie deal
Shelby Harris made $8m in his one season
Gerald Everett made $6m in his one season
Jamal Adams made $50m over four seasons
Greg Olsen made $6.9m in his one season
Brandon Shell made $9m over two seasons
Zeke Ansah made $8m in his one season
Luke Joeckel made $7m in 2017 dollars in his one season
These draft picks are such an enormous asset if you have someone good making the selections.