Don't let him roll out. If we keep him contained in the pocket, with our D-line apparently excellent at getting their hands up if they aren't getting a good push, Reesing's height will come into play against him in a big way. Since he hasn't had to handle that situation yet this year, he could start to panic and make bad decisions, a la Freeman last year.
I think if K-State lets Reesing get out of the pocket and create, they could get yards in bunches.
I'm not very worried about their running game at all.