What if Daboll was put off by the report that the team wants to retain the defensive coaching staff?
I mean, the guy will probably have a list of names he wants to fill the positions on his staff. So although you might argue that we already have a good defense and staff in place, it is, potentially, off putting to be dictated to that you will be keeping the previous head coaches’ staff rather than hiring your own preferred coaches.
Another factor why he might have chosen the Giants is the front office. They have just hired Schoen out of Buffalo and he is familiar with him. Whereas here he’s got to develop a relationship with Grier who appears to be Ross’ guy and bulletproof. Most other teams around this league would have fired him instead of or alongside the head coach.
Those are the main two, but maybe he didn’t rate Tua as a franchise quarterback? Granted Daniel Jones hasn’t shown more, but maybe he prefers to work with Jones than Tua or will be given the chance to pick his quarterback? Whereas here is likely Tua or nothing.