Should The Saints Sign A QB This Week?

St. Widge said
With 2 games in 9 days there is no time to bring in a QB that would be more ready than Haener or Rattler.

Nobody said bring in a QB from the outside and expect him to start this Sunday over Haener or Rattler.

However, 9 days is plenty of time for a 12 year Veteran like Tannehill to come in and learn enough of the playbook to be able to play in the system if called upon.

St. Widge said
We might as well see what we have in one or both of them, so we know if we need to keep looking for the successor to Carr.

I agree with this but the question in my OP was more related to the depth in the QB room while Carr is out and also not having a "camp arm" for the scout team.