I was pretty blown away at the creativity from the Dallas coaches in how they used Dunbar in 2015 (albeit for a few games).
I think Dunbar can be replaced through the draft with guys like Tyler Ervin from SJSt or DeAndre Washington From TxTech. I honestly didn't see any of SJSt games, so I mostly go by what folks are saying, but I saw more than a few Tech games and Washington looks like he could not only be that kind of pass-catching RB/#2-#3 RB but a special teams return man as well.