I cannot see Groce leaving for Nabraska--the job there is a coach killer. Illinois, yes, but speculation is that the Illini will make a run at Shaka Smart. Kind of surprising, but right now there just aren't any other high quality jobs available. Good news is that should Groce leave, Jeff Boals is just 75 miles away!
I think Shaka may stay put here in Richmond a while longer. He has a great contract, is very involved in the community and has a very young team. Chris Mooney at Richmond has turned down some offers from larger schools and also seems to enjoy Richmond. Both are very young and may have even more leverage a few years down the road, in particular Shaka.
BTW: Shaka is a graduate of Kenyon College and Rob Brandenberg played with Stevie Taylor at Gahanna.
http://www.vcuathletics.com/sports/mbkb/2011-12/bios/RobBrandenberg
As for Groce, the Wake Forest posters have been talking about him for a year now. I think they would even take TOS at this point.