The deal announced Monday will pay him $605,000 in the NHL or $65,000 in the minors.
Aronson, 23, had 29 assists in his first full season at Milwaukee in the American Hockey League last season. The 6-foot-1, 196-pound Aronson also led the Admirals' defensemen with 32 points. He had 38 points in the ECHL with Cincinnati in 2013-14.
The native of Placentia, California, was the 78th pick overall in the third round in the 2010 draft. He also has played two seasons with Portland in the WHL.