Lehtera (concussion) was able to get on the ice for a skating session prior to Saturday's practice, NHL.com's Lou Korac reports. Coach Ken Hitchcock has already ruled Lehtera out for Sunday's game against the Blackhawks, but the center's on-ice workout suggests that he's been noticing continued progress in his recovery from the head injury. He'll probably need to get in a skate or two with the full team before making his return to the lineup, which could happen at some point during the upcoming week.