fanspo.com made it look like it was a thing and there were some of us in here that thought it was a thing until just recently but when looking at other sites and the CBA, Norm and any other player signed using bird rights that took a pay increase of 20% or more can be traded January 15th. The only reason that makes sense to me about fanspo being wrong is that the modified date due to the late start last season was March 3rd and fanspo never updated it to this season's league calendar.
Norm can be traded, for sure, on January 15th but not before that.