Went through the unprotected lists for the upcoming NHL Expansion draft this week. Found 4 Mavs on the lists:
Pittsburgh - Josh Archibald Anaheim - Jaycob Megna Tampa Bay - Andrej Sustr Vancouver - Jayson Megna
The only other Mav whose name I saw was Anthony Stolarz. He was listed on the Protected list for the Flyers. Didn't see Jake Guentzel's name on either the Protected or Unprotected list for Pittsburgh, have to imagine they have no plans to risk letting him go.