Karlsson hasn't played since sustaining a 70-percent tear of the Achilles' tendon in his left leg when he was stepped on by the Pittsburgh Penguins' Matt Cooke during a game Feb. 13.
The 2012 Norris Trophy winner underwent surgery to repair the cut Feb. 14, and was expected to miss 3-4 months. He had 10 points in 14 games at the time of the injury, and was averaging 27:03 of ice time per game.
I don't have a crystal ball. Predicting is a real complicated thing. If we stay healthy, have enough depth and get the good goaltending we think we're going to have, you can go all the way. But a lot of things have to happen. There's going to be a lot of teams that think the same thing. Everyone made deals. We're all are optimistic about where we'll end up.
— Rangers general manager Glen Sather after being asked if he's constructed a team that can win the Stanley Cup before their 4-1 win against the Predators on Monday