Here is some inside info from a friend close to the situation:
CLK has contacted Diaz (MTSU), who is a defensive/special teams guy. Obviously CLK is taking his time and I'm sure he has contacted numerous coaches.
The source's opinion of Diaz: He definitely would make the special teams better (MTSU blocked about 10 kicks this year and used his schemes for kickoff, kickoff return, punt block and field goal block). But his real strength is recruiting south Florida. His dad is (or was, I'm not sure) the mayor of Miami. He knows everyone down there and could bring some big name recruits in there. He signed Sancho McDonald out of Booker T 2 years ago and he was the 15th rated dual threat QB in the country that year (he was injured, but still it was a big sign for Little Middle). I know he loves defense and he's making a pretty decent salary at MTSU, so I don't know for sure if he would actually go if he had to coach WR's. I know he could do it, and he would be a good addition. I think Gran knew more people in the Muck (north Palm Beach County, where Pahokee, Glades Central, Glades Day, etc. is), but Manny probably has more contacts in Dade and Broward county.