Crawford's at a -2.3 to Bradley's -5.5. For completists: Lee's at -6, and MarShon is at a +6. Plus/Minus is clearly the best measuring stick ever. 
http://stats.nba.com/teamPlayers.html?TeamID=1610612738
And, for what it's worth, AB wasn't extended either.
To add:
We have three players in the positive +/- so far this year.
DRUMROLL
Humphries, with 14, who has played in one game.
MarShon, with 6, who has played in one game.
And Brandon Bass, with .3, who has played in every game.
Then Sullinger, with -.3, who has played in all of the games but the first.
Then Crawford.
Then Green.
Then Pressey.
Then Wallace.
Then Bogans.
Then Bradley.
Then Lee.
Then Olynyk.
Then Fav.