"This was a stressful decision and one that I've been stuck in the middle on for a little while," Warren said. "I didn't like how things went this year with my injury and everything, but I also feel like I have the skills to take the next step. Some of the things I need to work on like being a better leader and being more vocal are things I can do at the next level."
"I talked to my mom extensively the last few weeks and I feel like the best move for me is to make the jump. Coach [Jeff] Capel is in my corner and said he'll help me out as much as he can."
Warren led the Sooners in scoring with 16.3 points per game and still finished second with 343 total points even after missing 10 of the Sooners' 31 games.
He also averaged 3.3 rebounds and one assist per game this year.
The talented guard shot 43.8 percent from the field in 2009-10, but he was even better the year before.
En route to the Sooners' Elite Eight run in 2008-09 when they were knocked out by the North Carolina Tar Heels, Warren shot 47.3 percent from the field over a span of 36 games.
He averaged 14.6 points per game, shooting 37.2 percent from the behind the arc, and he also racked up 3.1 assists and 2.2 rebounds per game on his way to being named a consensus first-team freshman All-American.
In his career, Warren shot 78.8 percent from the free throw line, hitting 215 of his 273 shots from the charity stripe.