Trading Kane based solely on an accusation (assuming he is never charged with anything) would be incredibly stupid. I think, based on fan reactions to this situation across the Internet, the majority of Blackhawks fans would be pissed if he were traded. It is my opinion that (again, this is all assuming he isn't charged) it will be awkward or whatever with the media at first, as it is now, but if Kane continues to play at a high level and there are no further developments in this investigation, this media circus stuff will eventually subside. Opposing fans who are upset that their team can't beat the Blackhawks will probably shout stuff at him, but I assume he knows that and is prepared for it.
Imagining watching Kane (who I assume after this will finally get his act together and stop ****ing up, because being accused of rape is different than drunken partying on a college campus or an altercation with a cab driver) be an elite, game-changing player for another team for the next eight years is not pleasant.