The positive scenario is more believable, though I doubt they can swing both those deals for Cousins and Wall.
The biggest problem with Cousins is the media hates him. That can be trouble in Boston.
Some writer out there in Sacramento went tabloid on him for his after hours activities, and Boogie went ballistic. Now the media is calling for the NBA to penalize him. The media has a lot of clout in sports these days, because that's where the $millions come from these guys get to play.