Why would ANYONE in Tarasenko's shoes still want to be traded at this point???? He had a super year playing together with Buchnevich and Thomas. The Blues are back as a Stanley Cup contender. He has only THIS upcoming season left on his contract. Why not wait the ONE measly, short year, while seeing what Army does to fortify and improve this team's roster, and see how far they go towards winning The Cup, and THEN go out on the UFA market to maximise the take on your next contract, while also deciding where you want to play for the next several years?
Even if he HATES Blues' managements' guts, because he thinks they handled your shoulder injury poorly, any rational person would wait out this coming season, to have the most options to better situate himself for your near future. It might even be possible that he will have another great year, playing with his two Blues line mates, and solidify any questions about his shoulder problems not being a continued risk, as well as having the chance for personal highs in scoring and possibly leading The Blues to an even longer playoff run (possibly making The Cup Finals (or even winning it), which could maximize his bargaining power as a UFA. I'd bet the farm that Vladdy and Army currently have an understanding to just leave everything like it is, and wait until after the coming season for BOTH of them to decide what they want to do concerning him re-signing or walking away. That gives both sides the most options, and the best chance to be satisfied with the outcome. Only an emotionally-dominated person, not being able to think clearly, would throw those options away reacting to perceived disregard of his welfare due to greedy self-interest, and also thinking that his potential gains from waiting the one season are so small as to not be worth the risk of his getting injured again, and losing his UFA bargaining power, which is now very high. Most star players, in this situation, would bet on themselves having another good year, and increasing their bargaining power.