Tonight, the Stars have scouts in both Boston and Toronto, for the Bruins' game against the Florida Panthers, and the Maple Leafs' game versus the Pittsburgh Penguins.
The Stars are actively shopping captain Brenden Morrow, who is expected to be dealt by the deadline, while center Derek Roy could also be moved.
Both Morrow and Roy are set to become unrestricted free agents this July.
It's unclear what Nieuwendyk is looking for in return for Morrow or Roy, but a young top prospect and high draft pick is expected to be the going rate for a player of their calibers.