Maybe, but maybe not, if Fletcher made a deal with Seattle for them to take a certain player, they want off the books, similar to what some teams made with Vegas.
As for Seth Jones, to get him next season, it would have to be a trade with Columbus, and I doubt that Kekalainen moves him. With Foligno moved, he now becomes the face of the franchise, and probably their new captain. Anything is possible, but if you are to trade for him in the offseason, you need to resign him before the season ends as he will be a UFA. Makes no sense in trading for him for only one season.
Other than that, my take is not much gets done today, but I suspect that the offseason will be busier (Well I hope). There will be a bunch of bad trades that will set the team back even further, similar to what happened in Minnesota, when Flether was there.