Spooner had been playing well in the five games since his return from a torn adductor in late November, notching a goal and two assists, while occupying his usual spot on Boston's No. 1 power play. He was not, however, feeling 100 percent and tweaked the injury against the Predators on Dec. 4.
"I think the last four games that I played I played well, but it's one of those things that it feels great and you go to make a move and it starts to hurt and it's in the back of your mind," said Spooner. "You're like, 'Should I play on it, should I not play on it?' It's tough. I've already missed 25 games or something like that, so it's not good. But it feels good now."
Should he return against the Rangers, Spooner would likely remain on the wing, where he played following his return late last month.
"Obviously - [Patrice Bergeron] and [David Krejci] are going to stay in the middle," said Cassidy, who also expects Spooner to be back in his spot on the top power-play unit. "[Riley] Nash, we like what that line has become. And then [Sean] Kuraly, he's been fine in the middle for what we've asked that group. So, it would probably be the wing. In a game, you can always make that adjustment."