Here's what you need to know about the UCF running back:
1. He Transferred to UCF from Miami
Johnson spent his freshman season at the University of Miami, but transferred to UCF after the 2010 season.
2. His Breakout Year Helped Power UCF to National Prominence
Johnson broke out this year as UCF's top running back, amassing 1,399 yards of offense and 17 total touchdowns. His spectacular 2013 season helped fuel the Knights to a 12-0 record, including a 52-42 upset win in the Fiesta Bowl over the heavily favored Baylor Bears.
Johnson scored three touchdowns in the school's first BCS Bowl appearance. Watch his post-game interview below:
3. He Joins QB Blake Bortles as UCF Stars to Declare for the Draft
George O'Leary's Knights will not only lose Johnson, but also star quarterback Blake Bortles, who decided to forego his senior season and enter the draft as well.
A formal announcement is expected on Monday afternoon.
4. He's Ranked the No. 9 RB Prospect
NFL Draft Scout ranks Johnson the No. 9 running back prospect in the 2014 class. He is projected to be a middle-to-late round pick.
Watch some of his highlights below:
5. He Has Star Potential at the NFL Level
Many scouts and NFL general managers believe Johnson has superstar potential at the pro level. The 6-foot, 215-pound back has elite power and acceleration, is great between the tackles and can make an impact catching passes out the backfield.