Necas, 25, is coming off the best season of his NHL career and is following that up with decent production so far this year. In 51 games this season with Carolina, he has 17 goals and 23 assists for a total of 40 points.
Necas has shown flashes of being a real point producer at the NHL level, maybe going to Nashville will help him take that next step. We'll see where this goes, but Necas would be a decent return for Saros among other things.