3. Dak Prescott
Out of these three options, this one is more than likely going to be viewed as the least likely to happen.
A two-time Pro Bowler, Prescott is in the final year of his contract. The Cowboys certainly have enough money to keep Prescott around past this season, as according to Sportrac, the Cowboys will start at $91.7M in salary cap space in 2020.
That being said, the Cowboys front office seems to not be too concerned with giving him a contract extension right now, and with the team sitting at 3-3 on the season at the moment, it could be possible that either the Cowboys decide he’s not the quarterback of the future, or he himself could just walk away in free agency (unless the Cowboys franchise tag him).
Prescott to Tennessee again seems very unlikely, but if he is available, I fully expect the Titans to go after him.