Murphy himself said he wasn't resigning here and I wouldn't be surprised if Allen felt the same way.
The honest truth is that we all picked a really #birdshitty team to support who has players fleeing the nest every time they hit a rough patch, because any time the Cardinals have been a winning team, this isn't a problem.
But
@BritCard is 100% correct in that mid players like Murphy and Allen are available every offseason, and that building your team through free agency is the best way to build a team that isn't competitive long term.