He is 32, would save like $6 million in cap, and hasn't produced sacks in years. Yeah, he is a good player who can get pressure (not sacks), but if Beane and McDermott want to move on and get the young guys a lot more development and playing time, I have no issue with that.
But I would expect they would move on from Addison before Hughes, even though he is not as favorable a cap situation.