It depends on what they are willing to define success as. If they think they are still an elite program that should win 12 games a year and be in the hunt for a national championship most years then no he isn't going to be successful. Nebraska is no longer seen by recruits as an elite offer. It isn't like getting an offer from Bama, Clemson, Michigan, Notre Dame, or even USC. They don't automatically get the attention of top prospects just by saying "We are Nebraska." They also are not in a situation that lends itself to them building to that kind of success. They are going to continue to get beat most years by a much better Wisconsin program, Iowa program, even Northwestern. Then they will take their periodic beatdowns by Michigan, Michigan State, Penn State, Ohio State. If success means building into a program that can win 8-9 games and go to a mid-level bowl most years he can do that. If success means a return to the glory days he will be the next one they chase out of town. Based on the ridiculous nature of most of the their fans I would guess it will be the latter, not the former.