Training camp opens on Sept. 17 and the Rangers will begin their six-game preseason schedule four days later, when they host the Devils.
Etem had five goals and five assists in 45 games for the Anaheim Ducks. He also had three goals in 12 postseason games. The California native has 15 career goals and 16 assists.
Rookies Oscar Lindberg and Anthony Duclair scored in the first period and J.T. Miller and Marek Hrivik connected 2:40 apart late in the third in the New York Rangers’ 4-1 exhibition victory over Chicago.
Chris Kreider and Marek Hrivik were among seven players sent down to the AHL by the Rangers.
A number of prospects including Marek Hrivik, Danny Kristo and Connor Allen could crack the Rangers’ opening-night roster.
The Phoenix Coyotes acquired junior center Ethan Werek from the New York Rangers on Sunday in exchange for Swedish center Oscar Lindberg.