Don't get me wrong, I love Martin and what he brings to the Isles. Toughness, hitting, forechecking, and so on. He is without a doubt one of the best "12th best forward" in the league, if you know what I mean. With that, he is a UFA, and our priority should be Nielsen, Cizikas, Strome, Okposo, etc. Martin is the kind of player who, on the open market, will get paid because others around the league have a love affair with our fourth line (for good reason.)
I can't for some reason remember the player I am thinking of, but there was a 4th line guy 2 or 3 offseason ago who got somewhere like 2.5-3 million per year. Not to say martin would get that, but I could easily see him getting 3 years 6 million or something, potentially even a higher dollar figure, on the open market. Obviously that isn't breaking the bank, but with the cap situation the Isles are in, they're going to need every dollar to maintain the core of the roster for the next several years. So unless Martin really wants to stay here and is willing to take a team-friendly deal, I think he, as our 12th best forward, is replaceable.
On the other end of the spectrum, Cizikas needs to get locked up. Anyone with eyes can see that Cizikas is one of the bet "4th liners" in all of the NHL. He just does everything well. The most underrated aspect of his game though is his offense. I genuinely believe Casey could thrive in a 3rd line role. He is the prototypical "3rd line center," who can check, excel in a 2-way style of play, and create offense. I remember when Cizikas was still a prospect, people had him pegged as a "future 3rd line C, with the upside to even be complementary 2nd liner." Now that he has been cemented on the 4th line, we forget those days because it is hard to imagine not only breaking up the 4th line in the NHL, but because Cizikas has excelled so much in his role, why change it up? Regardless, Cizikas is proving this year that he is capable of contributing greatly on offense. Although Clutterbuck and Martin have been good at putting the puck in the net as well, Cizikas is the one on that line most consistently responsible for the offensive production of the 4th line. No one on our team besides maybe Kulemin is better at creating opportunities by forcing turnovers behind the red line. Casey is already going to be a 30 point player this year. Imagine we had him centering our 3rd line with some combination of Lee, Kulemin, Grabovski. I have little doubt he could be a 40 point center next year, and he needs to be paid like one.
Most liekly, given his "role," Garth will give him a 2 or 3 year bridge deal and then we'll need to deal with his unrestricted free agency in a few years. But if I was the GM, I am offering Casey 4+ years easily. Do everything you can to make sure Casey is wearing an Isles Uniform for a long time.