Ballard is on the record saying that because if the nature of our scheme and the constant "go-go-go" demands on the linemen he wants a rotation where no one is playing anything close to 100% of the snaps. What we've seen thus far is that this means linemen playing about 65-75% of the snaps at the max and rotating a ton to keep them fresh and ready to go.
Carr (if truly available)
Is the safest QB solution
He is not in the same category as tier 1 QBs..... but he is good enough to carry a good team into the playoffs
I imagine that CB is considering all options to improve QB play