Well if Linehan loves Dunbar so much why wasn't he in more during 3rd downs last year? Frankly, I haven't recalled Scott saying anything about Dunbar. I think Dunbar stuck around because Jerry wants him and covets those quick backs like Dunbar. Linehan and Garrett could probably care less about him so long they can run the ball pretty effectively.
When Linehan was hired last year, he was quoted as how intriguing it would be to utilize Dunbar in much the same role he used Reggie Bush in Detroit.
Dunbar got 6-10 snaps per game last season (snaps, not touches). Dallas faces a 3rd and 1 scenario once or twice per game. Do the math...the passing game role Dunbar playd is utilized more than the short-yardage role being touted for Michael. Dallas isn't going to carry FOUR TBs on the game day 46-man roster. That leaves the #4 on the inactive list on game days. The only ways CM moves up to #3 is if someone gets hurt, or if McFadden is handed the "Dunbar" 3rd-down role.