While Scott Hartnell is not a free agent currently, the Columbus Blue Jackets quite possibly could buy out the expensive forward in advance of the Expansion Draft. Once bought out, Hartnell would be an appealing bottom six addition for any team.
Similarly to Antoine Roussel, Hartnell represents a player that can agitate and play the “enforcer” kind of game when necessary, but does not only play that style. Hartnell uses his big body to get to the dirty areas and find cheap goals others struggle to find. He has a history in the Metropolitan Division, and would likely love to get back at his former teams.
The move would depend on Hartnell taking a sizable pay-cut, but the New York Rangers should look into bringing him aboard.