Sanu had a terrific season in 2011, setting the Big East and school record for receptions in a season with 115. He gained 1,206 yards, the third-most in a single season in school history and eighth-most in a single Big East season.
In addition, he became the school's all-time leader in career receptions with 210, after catching six passes for 62 yards in a win over Iowa State in the New Era Pinstripe Bowl.
For all his efforts, Sanu was named a first-team Big East selection.
When asked at a news conference what he discussed with his family in order to reach a decision, Sanu said, "We talked about just all the stuff I did here, the great year I had, not sure if I would match numbers, and also we talked about my age being a difference. I'm 22 going on 23, and pretty much we talked about a lot of stuff, that was something that was big."
A clearly emotional Sanu said it was a tough decision to make because he is emotionally attached to Rutgers and his teammates.
"I definitely was thinking about coming back," Sanu said. "I love Rutgers so much, and just being around my teammates all the time. I'm going to miss that aspect of it."
ESPN NFL draft expert Mel Kiper Jr. ranks Sanu as his fifth-rated junior wide receiver available. Sanu declined to say what type of feedback he got from the NFL draft advisory board, though many project him as a second- or third-round selection.
Sanu, listed at 6-foot-2 and 215 pounds, had an impressive turnaround in 2011 after fighting through injuries in 2010. He was invaluable on third down and proved the most reliable receiver on the team. Behind him, Quron Pratt had the second-most receptions on the team with 32.
Andrea Adelson covers Big East football for ESPN.com.