Clary left Penn State earlier in the season based on a "coach's decision."
Guðmundsson appeared in 12 games this season for the Nittany Lions.
The game will be rescheduled at a later date.
The Nittany Lions are the top-ranked Big Ten team in the USILA and Inside Lacrosse polls.
Throughout the week, students are welcome to attend hands-on workshops, learn from Penn State alumni, and connect with other entrepreneurial students.
Battle will take the stage of Medlar Field at Lubrano Park for his first home game as manager, on Friday, June 7, against the West Virginia Black Bears.