I don't understand the "Injury Risk" with Sid in this thread, or discussion in general. Yes, he's gotten concussions but lets not pretend concussions aren't this extremely common thing that can happen to any player at any time. It's not like Crosby is skating around full speed with his head down through the neutral zone every night.
Getting a concussion is irrelevant/common enough to not have any place in this hypothetical trade decision making process IMO. There is no "injury risk".
Taking that out of the equation, there is no way you don't trade Toews for Crosby. Crosby on this Hawks team, passing to any of Kane, Hossa, Sharp, etc... would be so ridiculously unfair. Look what he's doing with Dupuis and -insert non-top 6 player here-.
Especially since Toew's next cap hit will most likely be equal to/more than Crosby's, there is no way Bowman turns that trade down.