Go to the student lounge from the main menu you and go to unlockables. You have to buy them with credits from the game. To use the jerseys; Press "Select" and use "R1" and "L1" to rotate between them.

Arizona Alt. Jersey Buy in student lounge for 45 Credits
Burger King Home/Away Jersey Buy in student lounge for 25 Credits
Cincinnati Alt. Jersey Buy in student lounge for 45 Credits
Duke Alt. Jersey Buy in student lounge for 45 Credits
Florida Alt. Jersey Buy in student lounge for 45 Credits
Illinois Alt. Jersey Buy in student lounge for 45 Credits
Michigan Alt. Jersey Buy in student lounge for 45 Credits
Missouri Alt. Jersey Buy in student lounge for 45 Credits
Notre Dame Alt. Jersey Buy in student lounge for 45 Credits
Oregon Alt. Jersey Buy in student lounge for 45 Credits
Pittsburgh Alt. Jersey Buy in student lounge for 45 Credits