If they both leave and TT doesn't grab someone that has actually played a game in this league I fear this defense is screwed barring a draft miracle.
Lets look at who was here last year, where they played and where that leaves us for next year.
2014 outside base package corners:
Shields, Tramon, House (Bush, Hyde in emergency situations)
2014 slot/ nickel:
Casey, Hyde, (Bush in emergency situations)
2015 outside base package corner:
Shields (Bush, Hyde in emergency situations)
2015 Slot/nickel:
Same
Casey is going to get absolutely desroyed on the outside vs speed vs size and vs physicality. I am scared to death of seeing him out there. Hyde could probably serve the House role of this year and be the 3rd guy in case of an injury.
Bottom line is that TT has to do something to replace those 2 if they both end up being gone.