Here is the chain of events that I have taken into account.
Thursday, Turner inquired on the Toronto page about a possible deal involving Olli Maatta and Jake Gardiner. He (Turner) never made a concrete trade, however, WhisperWhisper did.
After WhisperWhisper made the offer (post #2350), to which they negotiated.
On post #2356, Turner told WhisperWhisper that he might pull the trigger on the deal the next day, to which WhisperWhisper replied with consent to post the trade (post #2357)
On post #2372, WhisperWhisper made a slight change in draft pick(s) involved, to which Turner replied that he was okay for whatever, giving consent to either deal that WhisperWhisper proposed (post #2375)
In my experience with trade negotiations, if you are not completely ready to pull the trigger, on a deal you propose, you should add that the offer is tentative. By not doing that, we can assume that you give consent to a deal. I think that we can reasonably conclude that WhisperWhisper would have confirmed the deal with Turner, if he didn't go AWOL.
My vote is to let the following trade be upheld (2-1)
Olli Maatta
Ville Husso
2018 7th round pick (STL)*
Jake Gardiner
2018 5th round pick (NSH)**
*never specified
**worse of the two (NSH or BOS)