I'm not a big fan but knowing that many here are this might be the most extensive scouting report/story on him that I've seen- HERE
I agree strongly with his conclusion-
In the end, Mathieu will likely not be drafted anywhere close to where he hoped and many expected after his outstanding 2011 season due to his size, bad technique and character concerns. I would expect him to be selected on the third day
of the draft and will need to make sure his off-field issues are behind him if he is going to succeed in the NFL.
-4th or 5th Rd if he reeks of Jamarcus-ness in interviews.