Mike Garafolo: Saints are set to make a decision on Derek Carr within the next few weeks; likely to have multiple suitors if released

It’s not just that. The front office owes it to the rest of the team to make sure they have a quarterback on the roster who has some playing experience and has hopefully won at least a few games at one time or another.
Rookie and young QBs start all the time. Every player has to play their first games at some time. Now if Philly was coming off a Super Bowl and wanted to start a rookie week one, I'd agree. But our squad hasn't accomplished anything worth owing them anything but a paycheck at this point. If they want to start a Rattler or a rookie, they should do it. And if they don't think they need to take up a roster spot for a guy they hope never sees the field, then so be it. That's what rebuilds look like.

That said, there is no doubt we can get a smart backup that's played a few games for the vet minimum.