Tunnell left Iowa in January 1948 in order to make some money to enable him to return and play football in the fall. He was told by school officials that, in order to be eligible to play football again in the fall, he would need to return for summer school and make up for a class he failed in the fall. Tunnell later explained: "I got a telegram on Sunday saying I had to be back in school on Monday and didn't have any money or nothing."