Originally Posted by: JustJeff 
He's been working out with Patrick Peterson (former teammates at LSU).
The only way I see Teddy Ballgame drafting him is if he can play safety. Thompson has never had a corner under 5' 11" but has had a few 5' 10" guys at safety (Derrick Martin is the only one I recall at the moment).
Ron Wolf had a rule of "never drafting short corners." What Wolf never said was what constituted a "short corner." The cutoff for Wolf apparently (outside of bowing to his new DC - Ray Rhodes w/T-Buck), Wolf never dipped below 5' 11" and preferred guys 6' and above. Teddy Ballgame has stuck to that... rigidly.
As for the original question, I would take a late flier on him. Someone compared him to Woodson. Mathieu reminds me of a young Antoine Winfield. Smallish, ferocious in run support, coverage skills that make up for short stature. Like Winfield, I think the play-making opportunities drop, playing on Sundays.
We traded Tony Moll for Martin, just to get something. Turned out to be quite the STs player. I don't think anyone every expected him to really play a whole lot of CB.
I'm not quite sure how Ted sees this, but in my opinion, you'll only get flawed players in the later rounds. His flaw are his character (that being debatable, as I get the feeling that 2/3th of the NFL players smoke weed) and his size. You just have to ask yourself if he can contribute to your team despite those flaws... And I think he most certainly can.
Like said before, you don't put him on Calvin Johnson or someone like that, but he is physical enough and quick enough to be a great match-up against a guy like Amendola, Welker etc.
And if that doesn't work out, you still have quite the returner.
And if even that doesn't work out, he has all the tools to be an amazing STs player.
If he's there in the 5th, you have to take him. Only thing is, I really doubt that he'll be there. A team like the Bengals or Titans will take a chance on a kid like him far before Ted even thinks about pulling the trigger.