I'm taking a guess here, but I'd imagine a similar TV arrangement for Canada this season. I am hoping to see more Whitecaps games on main Sportsnet or Sportsnet One (as opposed to Sportsnet Pacific), but I know that I'll pay the extra few bucks a month to get Pacific if needs be. I also subscribe to Sportsnet World Online for my BPL games, and apparently they broadcast all of the Sportsnet-owned Whitecaps games on there also.
Gol TV will be the logical home for most Toronto FC matches (MLSE owns the club and the channel).
TSN/RDS will likely pick up the ESPN/ABC matches, particularly those involving Canadian teams, because of their relationship.
And I have no idea about Montreal.
But I think that following Vancouver and Toronto should be pretty easy as long as one is willing to pick up Sportsnet Pacific and/or Gol TV.