ESPN's Scott Powers reports the deal is a one-way, $575,000 contract. The Blackhawks have placed him on waivers, reports TSN's Bob McKenzie. Cumiskey will need to clear waivers in order to be reassigned to the Rockford IceHogs of the American Hockey League.
The 28-year-old is still rehabbing from an injury.
Cumiskey signed a two-way, $400,000 contract last summer with Chicago. He did not record a point in seven regular-season games and nine postseason contests with the Blackhawks, including the first three games of the Stanley Cup Final.
Cumiskey spent the majority of 2014-15 season with Rockford. He tallied two goals and 20 points with the IceHogs.
Should Cumiskey compete for a blue line spot in Chicago he will be up against David Rundblad, Trevor van Riemsdyk, Michal Rozsival and Viktor Svedberg for the final two spots. Rozsival is the lone defenseman in the group to have not played this season as he is working his way back from ankle surgery.
Rundblad and van Riemsdyk each signed two-year extensions with Chicago this summer, while Svedberg inked a one-year deal. Rundblad has no points and two shots in one game, while van Riemsdyk has skated in four games and Svedberg in three games.