No undrafted Cowboys FB has ever carried the ball more than 34 times in his rookie season. Lincoln Coleman holds that record.
No undrafted RB has ever carried the ball more than 38 times in their rookie season. Malik Davis holds that record.
Only five undrafted Cowboys ever started more than 10 games their rookie seasons. Interestingly, two of them were LG's, Ronald Leary and La' el Collins. Another was Robert Steele. The remaining two came out the same season and both in the defensive backfield, Everson Walls and Michael Downs. That's five players in the past 53 seasons (1970).
Whatever Luepke does, it won't be this upcoming season unless all other options are unavailable. That would not be a good thing.
Just like all the other undrafted rookies, Leupke is on the outside looking in. A bigger signing bonus will not determine his future with the Cowboys. He must impress with limited opportunities.
Projecting any contribution this season by Luepke is a tad ambitious.