The Fighting Sioux extended an offer to the 6-foot-4, 200-pound athlete following his performance at their camp.
Anyanwu, who also holds a scholarship offer from Air Force, has also recently camped at both Wisconsin and Minnesota in hopes of earning offers.
He plans to make a return visit on Friday to take part in Minnesota's camp at TCF Bank Stadium.
As a junior, Anyanwu caught 25 passes for 361 yards and two touchdowns. He also added 27 yards rushing on seven carries and 51 yards passing, while leading the Blaine Bengals to a 10-1 record.