Some worried people in Carolina theorize that if Harbaugh goes to Denver, then they will try to either get Carolina to trade down one spot to get Luck (although Carolina's owner in his presser today said we would not trade down) OR if we draft Luck then he is "encouraged" to hold out to demand a trade (like Mr. Elway).
Also from the presser today, seems Carolina will be going for a Coordinator instead of pursuing Harbaugh.