Would need some salary retention by the Cards to make this okay. Creates a significant hole at 3T (Phillips and Settle are pretty underwhelming for such a vital position in a single-gapping 4-3 front); the Bills would HAVE to fill this role in the first couple rounds or maybe post-draft FA? Even if you think Oliver is a bum he is the primary starter at 3T, and is sometimes kind of good.
Then again, I'm open to saying EFF THE ROTATIONAL DT DEPTH CHART if it means the Bills passing attack can take yet another important step forward. DHop and Diggs is a pretty legendary duo.