At this point I don't think there's any turning back now for Coach Groce as Ohio's concerned; he needs to just say yes to the Illinois job and move on.
It just depends. It's not like Ohio is hard to sell, even with a wavering coach.
Great arena, great campus, the best fan support in the MAC, recent NCAA success, etc., etc.
The life of a good mid major school is having constant speculation regarding your coach, It just is what it is.
Will it deter some guys? Sure. Will it deter everyone? I don't think so. At smaller programs, it is not uncommon to play for more than one coach.
There's probably a good argument for bringing in "the new guy" this year instead of next but I don't think it is to the point where you move on. Now if Groce has the Illinois job fall through and immediately jumps to interviewing for Kansas State, then sure, tell the guy thanks and move on.