Jaroslav Halak was not the Islanders’ goalie for their first ever regular-season game at Barclays Center, he wasn’t their goalie in the postseason and he might not be their goalie at the start of the next season.

After getting hurt in training camp, Halak suffered a severe groin injury on March 8 and was not able to return as his team lost in the second round to the Lightning. Yet as Thomas Greiss ably took the reins, and as the team remains infatuated with 24-year-old J-F Berube, the 30-year-old Halak and his two years at an annual $4.5 million salary-cap hit make him a possible trade piece.

Either way, the team is not looking to continue a three-goalie system next season. Halak admitted “it’s not ideal,” and added, “I’ve tried to tell [management], and this is not up to me.

“I like it here, but they just have to decide which way they want to go for next season. J-F is a young goalie, Greisser played well all season long. So we’ll see.”

Halak played 36 games all season, finishing with a 2.30 goals-against average and a .919 save percentage. Greiss, 30, has one more year left on his deal with a $1.5 million cap hit, and he finished the regular season with a 2.36 GAA and .925 save percentage in 41 games.

“I was expected to play that many games,” said Greiss, who had a 2.46 and .923 in the 11 postseason games, carrying his team through most of the opening-round victory over the Panthers. “As soon as you become complacent and start relaxing and happy with being a No. 2, you’re not going anywhere.”

General manager Garth Snow did not have contract talks midseason with representatives for any of his pending unrestricted-free-agent forwards: Kyle Okposo, Frans Nielsen or Matt Martin.

Of those three, it seems like Okposo is the most likely to leave for a big pay day, entering a free-agent market bereft of high-end talent after Steven Stamkos.

“We’re making a decision — you look at all those factors,” said Okposo, 28. “That’s what you pay your agent for. You just have to weight all the pros and cons, and that’s something obviously we’ll look at.

“You just want to play your best and set yourself up financially, and for your family, a lot of different reasons. If you’re lucky enough to play at a high level for this long, you have to to take advantage of it.”

Nielsen remained unsure of his situation. Martin was adamant about wanting to stay.

“I’ve always been an Islander, it’s my home,” Martin said. “It’s where I grew up as a player, and in a lot of ways as a person. Let’s see how it unfolds. I don’t know what’s going to happen, but I guess I’m prepared for whatever it’s going to be.”

Forward Ryan Strome, 22, had an up-and-down year, once getting demoted to the minors and then getting scratched three times in the postseason.

“I really haven’t faced adversity like I have this year,” said Strome, the team’s No. 5 overall pick in 2011. “It’s only going to make you a better player and a better person.”

If there were any questions about Strome harboring resentment to the team or Capuano, he squashed it.

“Not at all,” he said. “Even when I’m not playing, it’s not fun and you’re probably pretty upset deep down. But I’m always cheering the loudest when I’m not playing. I have the biggest Islander heart. I want to help this team win. That’s all it’s ever been.”

Defenseman Johnny Boychuk, who struggled some in the postseason, said he didn’t have anything physically wrong with him. … Josh Bailey said he suffered a concussion in Game 6 of the opening round, which made him miss the first two games against the Lightning.