Iff:
he is not identified as one of the core players that you MUST have to win a Super Bowl, and
his projected performance is not expected to meet his market value, and
you can get a draft pick that allows you to get a player of the same value as a DT who doesn't get to the QB, is good against the run, but is otherwise undersized, then
Yes.
Why might this not happen? Beane/McDermott's loyalty to "their" players.