GooseDawg78, I agree. Let CK keep his redshirt on. IMO the return that we would get in using him over our current backup RB's is not worth losing eligibility in 7 games (no. played to this date).
In my entire lifetime (I'm 107 yrs old now), you only have a small handful of super RB's like
Herschel, Bo Jackson, O.J., Barry Sanders, Jim Brown and maybe one or two others. And that is for the whole country. We are blessed to have gotten one of them. Anything short of that quality of talent isn't worth losing a year of eligibility.