Philip Nelson, the former University of Minnesota (UM) quarterback, has been released on $20,000 bail for his assault arrest Sunday night.

According to the Minneapolis Star-Tribune, Nelson, who had decided to transfer to Rutgers, agreed to make all court appearances and waived extradition upon his release early Monday morning. Nelson, 20, was arrested for jumping Isaac Kolstad, a graduating senior and Minnesota State University (MSU) linebacker who is now in critical condition.

"You have some decisions that were made by some individuals that probably had some impaired thinking and those decisions will affect many lives for years to come," Patrick McDermott, assistant Blue Earth County attorney, told the MST.

An eyewitness saw Nelson and another unknown person beat up Kolstad outside a Mankato, Minn. bar but the attack seemed random. Police are still searching for the second attacker, a person in a red shirt. The police have released surveillance footage from area businesses in an attempt to locate the person.

Nelson's attorney, Jim Fleming, told the judge at the court appearance Monday morning his client was not the one who knocked Kolstad unconscious. In "five to 10 seconds," Kolstad went from standing upright to lying on the ground with a fractured skull and a swollen brain. The 24-year-old father and college graduate could have severe brain damage if he does survive.

"The entire thing lasted five to 10 seconds," Todd Miller, Mankato's public safety director, told the MST. "Mr. Nelson and Mr. Kolstad know each other and played football against each other in Mankato in high school."

The original dispute apparently started at a nearby bar. The bouncer at the Blue Bricks bar kissed the hand of Nelson's girlfriend and the enraged UM quarterback may have confused Kolstad with the bouncer later in the night.

Following his charge of first- and third-degree assault, Rutgers dismissed Nelson from the football team even though he was going to sit out the year due to his transfer status, ESPN reported. Nelson denies it, but the complaint report accuses him of kicking Kolstad in the head "like a soccer ball."

Kolstad is being treated at Mayo Clinic Health System in Mankato, the Daily Mail reported. He had surgery to try and stop the swelling in his skull, but it has yet to be known if he will have brain damage or how severe it is.