Senators forward Jason Spezza will have back surgery Friday to repair a herniated disk, according to an ESPN.com report.

Senators GM Bryan Murray said it's too early to give a timeline for Spezza's return, but the team is hopeful he'll be play again this season.

The Maple Leafs announced Thursday that the club has claimed forward Frazer McLaren off waivers from the Sharks.

McLaren played in one game for San Jose this season. The Winnipeg, Manitoba native also played 26 games for the AHL’s Worcester Sharks collecting one assist and 87 penalty minutes.

In 40 career NHL games, all with San Jose, McLaren has registered one goal, five assists and 85 penalty minutes. San Jose originally selected McLaren in the seventh round, 203rd overall, in the 2007 Entry Draft.

He is expected to join the Leafs at practice Friday.

Rangers captain Ryan Callahan will miss 10 to 14 days with a partially dislocated shoulder suffered Tuesday night against the Flyers, the team announced Wednesday.

Callahan was examined by Dr. Andrew Feldman and underwent an MRI on his left shoulder Wednesday.

Former Sharks CEO Greg Jamison, the main suitor for the Coyotes, cannot produce the capital needed to purchase the team from the NHL and as a result a Jan. 31 deadline to maintain a critical lease agreement with the City of Glendale will pass without a deal being completed, multiple sources have told ESPN.com.

The Toronto Maple Leafs announced Wednesday that the club has assigned defenceman Jake Gardiner to the Toronto Marlies of the AHL.

Gardiner, 22, appeared in two games for the Maple Leafs this season, registering four shots on goal. The defenceman missed the Leafs first two games of the season due to injury. Gardiner has registered 18 points (nine goals, nine assists) with eight penalty minutes in 23 games for the Marlies in 2012-13.

Islanders forward Colin McDonald has been suspended for two games for boarding Penguins defenseman Ben Lovejoy in Pittsburgh on Tuesday, January 29, the NHL's Department of Player Safety announced today.

Rangers captain Ryan Callahan left Tuesday's 2-1 win against the Flyers after suffering an apparent arm injury during a third-period fight with Maxime Talbot.

There was no immediate medical update regarding Callahan after the game.

Coach John Tortorella said he had "no idea" how long the injury would sideline Callahan.

The Panthers will face the Lightning on Tuesday night in the first of five games this season between the two teams. The Panthers have dropped their last four games in regulation. 

Florida has been hit by some key injuries, but forward Kris Versteeg is set to return to the lineup and make his season debut against the Lightning.

The Senators called up Mika Zibanejad on Monday, according to an ESPN.com report.

The teams' first selection, sixth overall, at the 2011 draft, was in Ottawa enjoying a few days off due to the AHL All-Star break when he received a call saying the Senators wanted him at practice.

"I got the call this morning so it was nice," Zibanejad said. "It was a bit surprising since I was on the break, but I'm just happy to be here now."

P.K. Subban will be rejoining the Canadiens after signing a two-year, $5.75M contract on Monday, according to an ESPN.com report.

He will make $2M the first year after having earned $875,000 last season on an entry-level contract.