There have been no formal contract talks between the Senators and defenceman Erik Karlsson.

The calender has turned to June, which means the Senators' top blueliner is now less than a month away from becoming a restricted free agent on July 1 and the start of camp is more than three months away.

So there isn't any urgency to get a deal done, but league sources told the Sun the Senators might be in no hurry for heated talks.

With the CBA between the players and NHL set to expire Sept. 15 and discussions expected to begin with the NHLPA early next month, there is going to be plenty on the table to discuss in a new deal.

Sources say the NHL might try to negotiate a salary cap for players coming out of entry-level deals in the new CBA. Whether it will happen is a longshot, but it's something that's being bandied about.

While it's doubtful those kinds of restrictions would fly with the union, a cap would prevent the type of eight-year, $56-million deal that Kings defenceman Drew Doughty signed last fall to set the marketplace.

Karlsson, the NHL's top-scoring defenceman with 78 points this season, is expected to shoot for the moon in contract talks.

The best bet for the Senators and Karlsson is to get a deal done soon. GM Bryan Murray didn't seem concerned about getting a contract completed in April and talks with agent Craig Oster have been informal but cordial.

Karlsson, 21, told Sportsnet Radio in Toronto Friday morning he wants to be a contributor at both ends of the ice and he's not just going to be a one-hit wonder.