The Ducks will be the third top-10 passing defense the Nittany Lions meet this season.
The Nittany Lions will face No. 1 Oregon in the Big Ten Championship game on Saturday.
Tyler Warren, Sal Wormley, and Vega Ioane were all recognized.
Allen coaches the No. 4-ranked total defense.
Warren became the second Nittany Lion to receive the award since its inception in 2011.
Kortovich's commitment came just after Purdue fired its head coach.