A Rutgers University quarterback — who transferred from the University of Minnesota — was arrested on Sunday morning for allegedly assaulting a former Minnesota State-Mankato player who is now in critical condition. Philip Nelson was arrested "on suspicion of third-degree assault and underage consumption of alcohol" in Mankato, according to TwinCities.com.The 20-year-old Nelson was arrested on suspicion of assaulting Isaac Kolstad, a 24-year-old football player at Minnesota State-Mankato. Kolstad is listed in critical condition at the Mayo Clinic Health System in Mankato. Kolstad's family posted on his CaringBridge.org page that he suffered permanent brain damage and was "fighting for his life."Police found Kolstad at an intersection at around 2 a.m. on Sunday. Nelson was arrested shortly after and booked into the Blue Earth County Jail. He is expected to be arraigned early this week.Nelson could face charges for third-degree assault, which is a felony in Minnesota. A third-degree assault indicates the perpetrator inflicted "substantial bodily harm." Nelson was also charged with underage consumption of alcohol."We are in the process of gathering information on the situation and reserve comment until the legal process is complete," Rutgers athletic department spokesman Jason Baum said in a statement.Nelson transferred to Rutgers after starting 16 games in two seasons at Minnesota. He participated in spring practice, but is scheduled to sit out next season due to NCAA transfer rules. He has two years of eligibility remaining beginning in 2015.Nelson and Kolstad are both Mankato natives. Authorities are reportedly seeking another suspect in the assault.