...Tannehill remains a Dolphin for one more year - if we draft a position other than quarterback?
No, I wouldn't be surprised. I don't expect it to happen, but it is a real possibility that we have him for one more year.
Now let me ask a further question based on yours. If it turns out Tannehill does end up staying one more year and he plays and ends up with a great year and we go to the playoffs; what will be our QB situation in 2020?