The tentative deal between the Rangers and free agent Jason Arnott has been called off, a source confirmed.

Although the two sides agreed to terms on a one-year contract Saturday, the 38-year-old center was not cleared by Rangers team doctors, the source confirmed. 

The reason Arnott was not cleared is not immediately known.

Avalanche forward Ryan O'Reilly, a restricted free agent, has left Russian team Metallurg Magnitogorsk after the player and KHL team mutually agreed to terminate his contract Thursday.

The news comes just hours after Steve Downie was ruled out for the season because of a knee injury that will require surgery.