Could G Jack Campbell be called up?

Last week a Jon Rosen reported:
“Based on team correspondence, the possibility of attempting to assign Zatkoff to Ontario via waivers while recalling Jack Campbell is a hypothetical transaction that is currently on the table for the team. Zatkoff is one of the most admired and well-liked players in the game, but the team has not been happy with his play this season”

It might be that they want Zatkoff to get some games in, to get back to form.