Cullen didn't participate in line rushes during the Predators' morning skate and could be out of the lineup Tuesday against the Canadiens. Cullen received practice off Monday for maintenance purposes, but his return to the ice a day later suggests the forward isn't nursing an injury concern. However, it looks like he could be at risk of serving as a healthy scratch Tuesday, despite producing points in each of the last two games. There could still be an opening into the Nashville lineup after Viktor Stalberg was forced to exit the morning skate with an injury, but if Stalberg is able to participate in warmups without incident, Cullen would likely be forced to head to the press box for the night.