I agree with 60minutes that Tua is who we'd want if we can find a way to get him (Burrow isn't a possibility obviously).
If Tua goes to Miami, I could see us targeting Justin Herbert. Some people don't like him, but I think Payton could work wonders with a guy that has those tools. If we stand pat, the options are probably Jake Fromm or Jacob Eason at our current draft spot. Eason is more of a raw prospect but has an NFL arm and ability to make all the throws.
Wildcard could be someone like Jordan Love later in the draft, who had a down year last season.