The 6-foot-5, 240-pound left-hander announced on Twitter his intentions to play for the Huskers beginning next season.
Bunz returns to Nebraska after spending last season at Hutchinson Community College in Kansas.
Bunz went 8-1 with a 3.48 earned run average in 2019 for the Blue Dragons. He had a nearly 4-to-1 strikeout-to-walk ratio, striking out 81 batters while walking 22 in 54u2153 innings. He earned second team all-region honors after the season.
Bunz was a second-team Super State pick in 2018, helping lead Elkhorn South to a 19-10 record and an appearance in the Class A state tournament.