http://profootballtalk.nbcsports.com...r-doug-whaley/
Whaley and new coach Sean McDermott had personnel disagreements and the new owners were reportedly siding with the new coach.
And one more team will lean the hard way that making this kind of system work, where the coach is the personnel decision maker and the GM is neutered and hired after the fact, is very difficult.
Whaley had some strange enthusiasms (EJ Manuel still thought of as potential starter) but McDermott has never been a HC before, much less a personnel guy.