Buffalo Sabres- Former captain Craig Rivet was traded to the Columbus Blue Jackets, who didn't resign him. The most likely options are Paul Gaustad, Jochen Hecht, Ryan Miller, Tyler Myers, Jason Pomminville, Derek Roy, Drew Stafford, Robyn Regehr and Tomas Vanek. I think they either give it to Pomminville, or have a rotating captaincy once again, since Ryan Miller is their real leader.
Colorado Avalanche- Former captain Adam Foote was lost to retirement. Options include Matt Duchene, Milan Hejduk, and Paul Stastny. I think they'll give it to Hejduk until his retirement, both for his long service, leadership, and to prepare one of Stastny and Duchene to take over as the team's captain long term.
Florida Panthers- Captain Bryan McCabe was traded to the New York Rangers, and is currently a free agent. Not many options after such a huge turnaround. May be given to one of David Booth, Brian Campbell, Ed Jovanovski, or Stephen Weiss. I'll say Jovanovski, for no reason other than no real long term candidates exist.
New Jersey Devils- Previous captain Jamie Langenbrunner was lost to free agency, signing with the St. Louis Blues. Martin Brodeur, Patrick Elias, Ilya Kovalchuk, Zack Parise, and Anton Volchenkov are all possible options to be the next captain. If not for holding out and only signing a one year contract, Parise would be the obvious choice. In his absence, I would guess it would be given to Kovalchuk, in attempt to justify his life long contract.
New York Islanders- After Doug Weight's retirement, the Islanders are without a captain. The captaincy is almost guaranteed to be given to one of either John Tavares or Mark Streit. Being that the Islanders are a young team looking to attract fans, Tavares is almost assured to be given it, assuming they name one at all.
New York Rangers- The Rangers, classy organization that they are, bought out last season's captain Chris Drury. In his place, likely candidates include Ryan Callahan, Brandon Dubinsky, Marian Gaborik, and Brad Richards. I can't really pick an obvious choice, so I'll go with Gaborik, as he's their offensive star, and the highest paid player.
Philadelphia Flyers- Previous captain Mike Richards was traded to the L.A. Kings. The next captain is going to be Chris Pronger. Daniel Briere, Claude Giroux, Scott Hartnell, Max Talbot, and Kimo Timmonen could all make great captains, but it'll be Pronger, no doubt.
St Louis Blues- The last captian, Eric Brewer, was traded to the Tampa Bay Lightning. The next captain will likely be one of Jason Arnott, David Backes, Barret Jackman, Jamie Langenbrunner, and T.J. Oshie. It will probably be one of Backes or Oshie. I'll say Backes due to the length of his contract. Plus Oshie seems to have attitude problems.
In summary, my predictions are;
Buffalo Sabres- Rotating Captaincy
Colorado Avalanche- Milan Hejduk
Florida Panthers- Ed Jovanovski
New Jersey Devils- Ilya Kovalchuk
New York Islanders- John Tavares
New York Rangers- Marian Gaborik
Philadelphia Flyers- Chris Pronger
St Louis Blues- David Backes