According to what I've read, Addison played only 41% of the team's defensive snaps this past season. It's worth noting that Robert Ayers signed for $19.5 million over three seasons a year ago despite having very similar pass rushing numbers while being a much better run defender than Addison. For the sake of comparison, PFF had Ayers as the 10th best defensive free agent a year ago and Addison as the 39th best defensive free agent now. Depending upon the amount of guaranteed money this isn't the end of the world, but it isn't something I would have done.