McDonnell joined his former junior team, the Kitchener Rangers, as an
assistant coach during the
1986–87 OHL season. Later that year, he replaced
Tom Barrett as
head coach. He won the
Matt Leyden Trophy and
CHL Coach of the Year Award in the
1988–89 OHL season. He reached the
Memorial Cup for a second time; the first as a coach, in
1990 where he and the Rangers lost in the finals 4–3 in double
overtime to the
Oshawa Generals. He was coach of the Rangers for nine seasons before being relieved in the
1994–95 OHL season. After being fired by the Rangers, McDonnell found work with the
Detroit Red Wings as an amateur scout. After eight seasons as a scout, McDonnell was promoted to Director of Amateur Scouting for the Red Wings. He won the
Stanley Cup four times with Detroit, in 1997, 1998, 2002 and 2008. McDonnell, along with Red Wings
General manager Ken Holland, former Red Wings executive
Jim Nill, and current Red Wings scout
Håkan Andersson have been partially credited with the success of the Detroit Red Wings. On July 6, 2013, McDonnell as well as Red Wings scout Mark Leach followed former colleague Jim Nill to the
Dallas Stars, where McDonnell was hired as Director of Amateur Scouting for the Dallas Stars, the same position he held in
Detroit. ==Career statistics==