Naasik Ferdous, 22, attended Oklahoma briefly but was expelled in January 2011 after school officials said he was stalking and harassing female students, and lied on his admissions application.
While attending OU, Ferdous latched on to several members of the women's soccer team, including goalkeeper Kelsey Devonshire.
University police said Ferdous contacted Devonshire and other players on Facebook, claiming to be a "big fan." He went on to stalk the players around campus and lie to other students, pretending Devonshire was his girlfriend.
After being expelled, Ferdous was accepted at the University of Cincinnati, where he was enrolled in the school's pre-med program. Ferdous told police he blamed Devonshire for being expelled from Oklahoma and after performing poorly on tests at Cincinnati he took his mother's car and credit cards and drove to Norman, Okla., to kill her.
On his way, Ferdous stopped at another female student-athlete's house in Kansas and delivered a letter that contained threats against Devonshire, police said.
Ferdous was arrested eating breakfast in the student cafeteria the following morning.
"Back in October of 2012, I wanted to attend OU's medical school and needed to have a good GPA," Ferdous wrote in a statement to investigators. "However, the week prior to getting arrested, I did poorly on my physics and organic chemistry exams.
"I got upset and felt my reason for no longer being an undergraduate OU student was [Devonshire's] fault."
Ferdous pleaded no contest to stalking and harassment charges in May and has been jailed since his arrest last fall, The (Oklahoma City) Oklahoman reported. He was sentenced Monday by a judge in Cleveland County court.