The way I've always seen Grant, is as an attacking, creative, midfielder rather than as an out-n-out winger like Hawk or Aless....the normal pairing in midfield so far, has been Yates, with either Hewitt or Milsom....so maybe KN sees Noble as a straight replacement for Yates...or (if he doesn't return to Forest) as a partner to Yates?.....KN has tried Walker there a few times, and it hasn't really worked....so LN just gives him more options IMO.