Chiarelli's potential job title appeared unclear, but the Oilers will reportedly announce his hiring at a news conference on Friday.
Chiarelli was fired last week by Boston after the team failed to qualify for the playoffs for the first time in eight years. He'd been the Bruins' GM since 2006, building the team that won the Stanley Cup in 2011. Boston returned to the Cup final in 2013 and had the best regular-season record in the NHL a year ago before collapsing this season amid injuries to key players Zdeno Chara and David Krejci.
Despite his success, Chiarelli has been criticized for trading talented but troubled (at the time) young forward Tyler Seguin to Dallas, and for dealing valuable defenceman Johnny Boychuk to the Islanders before the start of this season in a salary-cap move that left Boston with a thin blue-line.
Chiarelli would have plenty of young talent to work with in Edmonton — including, presumably, teenage phenom Connor McDavid, who the Oilers are expected to select with the No. 1 overall pick after winning the NHL's draft lottery last week.