Making the cut
There could be openings on the second, third and fourth forward lines following the departures of Huberdeau, and free agents Claude Giroux (Ottawa Senators), Noel Acciari (St. Louis Blues), Mason Marchment (Dallas Stars) and Maxim Mamin (Kontinental Hockey League). Forward Anthony Duclair will also be out until midseason after having surgery to repair an Achilles tendon injury in July. Nick Cousins, Colin White and Rudolfs Balcers, who each signed as a free agent, are in the mix. On defense, there are openings left by Weegar and free agent Ben Chiarot (Detroit Red Wings). Lucas Carlsson and Marc Staal, who signed with Florida on July 13, are possibilities.
Most intriguing addition
Tkachuk said he wanted to come to Florida for the chance to win not only now but in the future, and he's going to be counted on to bring the big numbers he had with the Flames. It should help that he's familiar with several forwards, including Ryan Lomberg and Sam Bennett, each former Flames. The question is can the left wing find the same chemistry with center Aleksander Barkov and right wing Sam Reinhart (assuming he's on the top line) he had with Elias Lindholm and Johnny Gaudreau last season in Calgary.
Biggest potential surprise
Can Carlsson become a more consistent presence in the lineup? The 25-year-old had nine points (three goals, six assists) in 40 games with Florida last season. He has played in 58 career NHL games with the Panthers and Chicago Blackhawks.
Ready to break through
This is a tough one with the Panthers, considering the experience on the roster, but forward Anton Levtchi could get a good look in training camp. The 26-year-old, who signed with Florida on June 14, led Liiga, the top league in Finland, with 61 points (26 goals, 35 assists) in 55 games for Tappara. The Panthers lost some scoring with their offseason moves, and if Levtchi has a good camp, perhaps he makes a splash.
Fantasy sleeper
Carter Verhaeghe, LW (fantasy average draft position: 175.0) -- He led the Panthers with 12 points (six goals, six assists), all at even strength, in 10 games in the Stanley Cup Playoffs last season. Verhaeghe was tied for third in the NHL in even-strength points through the first two rounds of the playoffs behind Connor McDavid and Leon Draisaitl of the Edmonton Oilers and remains a fantasy sleeper with likely exposure to at least one elite forward in Barkov and/or Tkachuk. -- Anna Dua