I'm a Cowboys fan and I'm not sure I'd want David to land there. Unless Zeke is hurt no one else is getting carries for the next 5 years.
I think they'll be looking to reduce his workload a little bit over the next season or two for a couple different reasons. For one, they need him fresh for later in the regular season and postseason if they get there. Second, they need a little insurance if he decides it's time for a new contract. Gotta have a solid backup plan in case of a prolonged holdout.
Also, there have been a couple rumors that Dallas will be looking at running backs in this draft. I think they'll have more pressing needs with their second round pick but near the end of the third round it makes sense.