Hey Tone, who's going to coach me up?As you all surely know, Paul Pasqualoni has been terminated as the Dolphins defensive coordinator. Add to that the departures of both the inside linebackers coach and outside linebackers coach and you have three vacancies.
The substantial word on the streets, AKA the best secret left unhidden, is that the NY Giants former defensive coordinator and linebackers coach, Bill Sheridan, will be joining the Phins as the linebackers coach. Whether this will be coaching the inside or outside, or perhaps both, is unknown.

Sheridan coached only one season as the DC in NY, and the Giants defense finished 13th in the league. They broke down after the first six games, mainly in the secondary, and allowed several 40+ point games at the end of the season. This was enough to force the Giants to terminate Sheridan.
The thing about this though, as you are probably already thinking, is that he is being hired to coach the linebackers not run an entire defense. This is something he is very good at. From 2005-2008 the Giants fielded a very solid linebacking corps, which included the likes of Antonio Pierce and more apropos to the Phins 3-4 system, Mathias Kiwanuka.
Kiwanuka, due to injuries to other personnel, successfully converted from 4-3 end to 4-3 outside linebacker on the strong side. He played very well for a 266 lbs guy in coverage. He then rotated back and forth from linebacker to defensive end when Osi Umenyiora went out in early 2008 during training camp.
You can obviously see the thread I'm tugging on. Sheridan turned a defensive end into a 4-3 outside linebacker. In other words he can really coach. My guess is that Sheridan will handle coaching up Wake to play in coverage and keep him on the field more next season, let alone getting more out of the two interior guys whoever they may be next year.
So the Sheridan signing is genius in my opinion. Teach Cam Wake to play in coverage. Let him destroy QBs on every other down. That and squeeze everything we can get out of third round selection, Micah Johnson. Sorry. That part might be fiction.
The secondary aspect about signing Sheridan is that it also brings on board a guy who can run an entire defense, which could be handy if we bring in the next guy I'm about to talk about.

Al Groh. Let's get a couple of things about the former University of Virginia head coach straight before talking what signing Al Groh would mean. Groh is not Dick LeBeau. He is not the recently deceased Jim Johnson. He isn't even Dom Capers. This is not a guy who has eight million blitzing schemes drawn-up on his shower curtain. He is yet a hard-nosed guy who will run a gap control defense that concerns itself with pressure more than glittery blitzing. He is basically a more accomplished version of Pasqualoni.
Groh has thrived under Parcells in the past. Groh has been nearly every kind of coach on the defensive side of the ball and has a lot of experience at head coach, even for a year at the professional level as the guy who followed Bill Parcells after his stint with the jets.
Groh has coached defensively for Parcells at nearly every stop the Big Tuna has made. The exception is Dallas.
What Groh would create is a stabilizing force who could both "coach up" and "fire up" players like a head coach as well as provide system continuity between what Pasqualoni was running and what he will install.
Like I said before, it is an upgraded version of what we already have. The guy did turn Chris Long into a defensive phenomena. Too bad Long he ended up on the Rams, never to be heard from again.
Back to Sheridan. Bill Sheridan is fifty years old and could potentially be groomed to fill in for Groh if he again finds himself courted as a head coach on the collegiate or professional level.
All that speculation aside, there are a couple of other names that are out there. One of them is former Browns head coach and longtime Parcells disciple (of the Belichick clan) Romeo Crennel. Romeo would be fine with me, as he seems to win player's respect and has run defenses that have maximized talented 3-4 down lineman in the past. Think Willie McGinist and Richard Seymour.
Crennel's agent has said that the Chiefs have first shot at Romeo's services and that in football agent speak sounds like a deal.
One other name that came up, and I think was totally preposterous, is Bengals defensive coordinator Mike Zimmer. His contract was up and he had turned the Bengals defense into a viable unit (after drafting a shit ton of top flight linebackers mind you). He is a 4-3 guy and no way in hell are they switching to that. Anyway, the Bengals retained Zimmer. So that is a moot point.
What I'd like to know is what blitz crazed mad scientist is out there coaching the 3-4 on the collegiate level. Where are thou, Dick LeBeau junior?