I think all of this is true and Young is worth 13M. I also think he is a rotational DE. He had 4 games with blanks on the stat sheet. We are 0-4 when Cam Jordan get 40% or less snaps. Young seems to play best on obvious pass situations. He is not solid vs the run on a team giving up 4.9 ypc. PFF scores him 174/202 EDs vs the run. Allen had him playing 7T so he could 1 gap vs the run and was also trying to keep him from pass rushing too wide and deep like he did in Wash and SF. The other MO on Young is if he doesn't immediately win a pass rep he just gives up or waits for a play to be over.
Granderson had 8.5 sacks at RDE last year. We bounced him to LDE this year since he is the better run DE. I think giving RDE to Young instead of focusing on Granderson's development is a mistake. Even with the change Granderson has 50 tkl to Young's 25 with the same sack total.
I'd sign Chase for 13M. But, I want a 1st down run stuffer pushing him for playing time and the ability to walk away when/if he plays lazy and undisciplined.