I see it more as getting a bad contract would decrease Drouin's value in a trade. Giving up the 1st would be like Avs "drafting" Drouin even if it would mean Avs have to give up a pretty good prospect in the trade as well.
If a team could toss a 1st + decent prospect + short term cap dump for Drouin and Carle it would have been done by now I think.
So either Yzerman still is asking a fortune for Drouin, or no teams in the league are willing to take Carle and still send any significant value. (watch out for Toronto though)