Doesn't really matter if Demidov gets 11 or not. In fact I'd prefer him to get #91 and let the guy etablish that number as a recognizable one in Habs history. Plus he is a very different player compared to Gallagher and Koivu so #91 just suits him better imho
Also , and no disrespect to Suzuki , Koivu , Plekanec , Gallagher , Gomez etc but i watched the number #11 and #14 in our top 6 for the last 2+ decades. Watching a highly skilled gamebreaker wearing #91 is just gonna feel fresh for some reason lol.