Buffalo locked up its No. 1 pick in last month's draft by signing the Swedish native to a three-year deal.
With this move, Pittsburgh clears $5.25 million in cap space, which will allow the Penguins to make a run at unrestricted free agents.
Dahlin is just the 15th ever defenseman to be picked in the draft’s top spot.
Parker's family said he exhibited many signs of brain trauma after his retirement from the NHL.
Brandon had served as president of the Bills since 2013, only the third person to hold that title.
The Buffalo Sabres hold the number one pick in the 2018 NHL Draft, with Rasmus Dahlin considered the top player.
NHL's worst team comes up big in the draft lottery; Hurricanes get second pick and Canadiens will pick third.
The Panthers will face the Sabres and the Bruins without star center Aleksander Barkov as he recovers from an injury.
In his third season in Buffalo and ninth in the league, Kane has 20 goals (40 points) in 61 games, but has a minus-14 plus/minus rating.