I've said before that I wouldn't mind a Bender signing, as long as we're realistic about what it might achieve. This wouldn't be a Bradley/Niang replacement. It's a play that there's untapped talent that can be brought out over the long term.
Compare some of Bender's stats to Bradley's (Per RealGM) (ordered by season chronologically):
NBA PER: Bender: 5.4, 7.1, 9.4, 10.2; Bradley: 9.5, 19.0, 20.4
Summer League PERs: 2.4, 12.4, 5.4; Bradley: 18.2, 25.0, 35.4
Preseason PERs: Bender: 1.9, 9.0, 1.0, 33.3; Bradley: 11.7, 26.3, 40.7
(I recognize that PER is a stat that might as well have been invented to make Tony Bradley look good, but I still don't think you can discount the magnitude of the differences here.)
I wouldn't even attempt to sign Bender until it's obvious that there's no Harkless/Udoh/someone else(?) stuff happening -- in other words likely early March.