As Tkachuk is an RFA and without a contract, teams will not be willing to take a chance on Tkachuk and give up a lot in a trade if he is not willing to sign an extension with the team, so Tkachuk also give a list of 5 teams he would be willing to sign an extension with:
We already know that the Golden Knights and Florida Panthers do not have the cap space to bring on Matthew Tkachuk, although they'd both love to, so you can count them out. But the Blues, Stars and Predators could definitely swing something to make a deal happen.