I get that. Either take Barton (C) or a starting CB like Wiggins and then take Isaac at 55. You have an immediate starter in Barton or Wiggins at a greater position of need and then Isaac as a rotational DE (ie what Robinson will be).
4 sacks this year and two of them came against UMass. He did have a very good pass rush rate but just couldn’t bring QB down. I was hoping for an OL or a starting CB.