When could Kaepernick be back?

49ers coach Jim Tomsula has said quarterback Colin Kaepernick was benched in order to give him a chance to “step back and breathe.” Which strongly implies that, at some point, Kaepernick will be back. With no other quarterbacks on the roster other than Kaepernick and Blaine Gabbert, Kaepernick could be back soon — if Gabbert…