Again, it's easy to hire a coach who speaks any language, and then have him speak english. The other way around is rarely seen. Find me an english-only speaking coach who coaches an Italian team and doesn't speak any Italian, or a Spanish team and doesn't speak any Spanish, and I'll be very surprised.
English is easy to learn, and since most athletes speak English, it's a requirement to speak it.
If you want a good example, go with FC Barcelona, like a journalist did today. Everyone there is expected to speak Catalan. Their slogan : Més que un club.
I'm sure a lot of people would be ready to get an English-speaking coach, if, for example, the equivalent of Scotty Bowman was interested. Cunneyworth is no Bowman.
Montreal tends to ruin French players though with unrealistic expectations and pressure. Leblanc seems to have a good head on his shoulders though, so I think he'll fare much better than a Latendresse.
That's another thing completely though, and I think it mainly comes from the star system in the junior league. Those kids get way more attention than Louis Leblanc ever had in the US league, which, to me, explains the difference between him and Latendresse. The LHJMQ is a broken league that breaks its players.