I've seen him several times at Carrow Road (whilst staying with my parents in Norwich) and like you say he's been solid, without getting the headlines - but has been mentioned as being in with a shout in the Norwich player of the year award. I personally would rather have him as backup than an unhappy Corluka.
I doubt he'll get the Norwich POTY as for a FB to get such an award, you have to be absolutely outstanding and be putting in MOM performances pretty much all the time, and I doubt Naughton has been doing that. Mind you, I was at Carrow Road on the last day of the 79/80 season when a certain Norwich FB got the POTY award before the last game of the season against Derby, and that FB was our very own Kevin Bond, so it can happen.
. Just waiting for the date and ground now.