To me the Cowboys only have a few tradeable assets:
-TE Jake Ferguson could net a 3rd or 4th round pick at worst. He had a down year due to a knee and concussion, but do the Cowboys believe in Luke Schoonmaker enough to pull the plug on Ferg?
-RT Terence Steele. His contract will make him hard to move but a 5th round pick for him seems realistic. With enough 5s and 6s Dallas could trade back up into the 4th.
-LB Damone Clark: A 6th round pick for him would be a win. A 7th or a fringe roster player is more likely.
-WR Jalen Tolbert: Don't know if they give up on a former 3rd round pick that did score 7 TDs last year, but the Cowboys might draft a WR early and still have hopes for Mingo. Tolbert could also get them back into the 4th round but is more likely fetching a day three pick.
Others: DE Sam Williams, S Donovan WIlson, S Malik Hooker