Similar to Patrick Kane, Jonathan Toews decides his own future. If the Captain of this team is watching the playoffs right now and misses that kind of experience then he could move his no-movement clause and get dealt to a contender, the only issue is his salary which is 10.5 million.
The Blackhawks would have to hold some of that money back and would expect to be compensated in return. Toews was great during the play in series against the Edmonton Oilers if that Jonathan Toews returns to the team next season and wants to be traded then there definitely is no doubt that they can get some picks and prospects in return.
Kubalik was reliable this season. He was not perfect or that noticeable, but he got the job done. Should the Blackhawks want to sign Vinnie Hinostroza and play him in the top six over Kubalik then there definitely is some team out there looking for another season of Kubalik at a relatively reasonable price.
In the future when Kubalik is asking for a new contract at the end of the 2021-22 season then things will get more difficult.
Connolly is a Stanley Cup champion that did not have the best stretch with the Florida Panthers. He was dealt to Chicago as a bad contract but if he gets a solid opportunity with the team next season he could be a really interesting trade deadline bait piece. However, playing Connolly is going to block some young players from the NHL.