In the end, the Bears should have drafted a guy like Chandler Jones. Yes, there are durability issues with him, but he's a more natural 4-3 defensive end as he stands over 6'5".
Frankly, a fear is that the Bears could have taken McClellin to keep him away from Green Bay, whom many people believed he would fall to. While this line of reasoning may be a stretch, what other explanations are there for Chicago to take a guy that looks like he doesn't fit into this system?
If he is coming to Chicago strictly to rush a passer on 3rd down, that's a pretty big waste. Frankly, it reminds me of when Cam Cameron tried to sell Dolphins fans on the fact that Ted Ginn Jr. was taken so high because he could return punts really well.
Again, he doesn't fit as a true defensive end. In fact, ESPN has him listed as a linebacker. While Brian Urlacher isn't exactly small, he has a rare make-up that has him excel at his position, which is why he is likely going to the Hall of Fame.
No offense to McClellin, but he's no Brian Urlacher, especially considering Shea would have to play on the outside.
Considering there were more natural ends available, and the poor fit I believe McClellin will be on this team, there is no way I could give the Bears anything resembling a good grade.
Bears GM Phil Emery has made some nice free-agent signings. However in this case, he looked dangerously like Jerry Angelo.