From Gophersports.com

Tickets for the first-round game, which tips at 8:30 p.m. (CDT) (Tuesday), are available for purchase immediately via Minnesota’s official athletics website, www.gophersports.com. The Minnesota Athletics Ticket office will begin selling tickets over the phone at 612-624-8080 or 1-800-U-GOPHER and in person at the Mariucci Arena box office Monday morning at 9 a.m. Tickets are priced at $5 for student general admission and $20 for reserved seats.

Apparently, student tickets are only available in person. At the time this was originally posted, the best available online seats were row 9 at center court. Its hard to beat that for $20.