Jimmy G has proven himself to be even more injury-prone than Tannehill. I don't think Shanahan would be inclined to trade Mullens at this point.It's an interesting option but it doesn't look like the Cards want to trade Rosen. If we can't get a top QB prospect from this draft, I'd have a look at Nick Mullens. I'm not sure what compensation the Niners would want for him but he could be a low risk option for a year or two while we position ourselves for 2020 or 2021 draft.