The Coyotes don't have a year to wait (and neither does Chayka), that's why this might happen. Let me explain...
Next year, Keller will come off his ELC and there isn't any salary dropping off (besides Ribs $2m), so the roster will be more or less as it is now, with probably one piece gone. Hino is due for a raise as well. It will be difficult to secure a net better roster than you have now. Which leads into...
If you were completely and utterly dispassionate about how old players are and simply were plugging them in based on their production v their salary, you'd start with someone like Kessel. The cost to acquire was low because Kessel controlled his fate and likes Tocchet. He's older, but he produces. From there, you'd actually run into Taylor Hall pretty quickly. Hall has no NTC or NMC, but he's a PPG+ player only making $6m that his current team has no hopes of keeping. If the player is more or less explicit about his intention to test the open market, his value in trade begins to go way below what his roster value is. NJ isn't super keen to keep him on as a hired gun, but the Coyotes - a team needing to maximize their playoff chances for the coming season - would actually be really, really keen to acquire a $6m PPG+ elite player.
It actually makes perfect sense for AZ when you think about it. It all comes down to the rental price.
They don't want to lose Hall for nothing. GMs are very wary of taking a valuable UFA into their final year, especially if they are underpaid relative to what other players are earning. You can't trade him at the deadline if you are in a playoff position or close to it. He walks in the summer.
Trade him now and you keep some of that value moving forward. This is more or less exactly why Chucky was traded.