Question: Michael G. Barnett, is a Canadian ice hockey executive currently serving as Senior Advisor to the President-General Manager of the New York Rangers, Barnett negotiated the playing and marketing contracts for which Canadian retired professional hockey player, who played in the National Hockey League from 1983 until 2000, and was able to play both the forward and defense positions?
Context: John Vanbiesbrouck (born September 4, 1963), nicknamed "the Beezer" and "VBK", is an American professional ice hockey executive and former player.  A goaltender as a player, he was inducted into the United States Hockey Hall of Fame in 2007.  Vanbiesbrouck played in the National Hockey League (NHL) for the New York Rangers, Florida Panthers, Philadelphia Flyers, New York Islanders, and New Jersey Devils.  He began his career playing major junior hockey for the Sault Ste. Marie Greyhounds of the Ontario Hockey League (OHL).  Following a successful season with the Greyhounds, he was drafted by the New York Rangers in the fourth round, 72nd overall, in the 1981 NHL Draft.  After his junior career ended, he played for the Rangers minor league affiliate, the Tulsa Oilers of the Central Hockey League.  Despite the team's near collapses due to financial concerns, Vanbiesbrouck led the Oilers to a league championship and shared the league's MVP honors. Martin James McSorley (born May 18, 1963) is a Canadian retired professional hockey player, who played in the National Hockey League from 1983 until 2000.  A versatile player, he was able to play both the forward and defense positions. Mark Hardy (born February 1, 1959) is a Canadian retired professional ice hockey defenseman who played 15 seasons in the National Hockey League (NHL) for the Los Angeles Kings, New York Rangers and Minnesota North Stars between 1979 and 1994.  A professional hockey coach for 20 years, Hardy is currently an assistant coach with the Tucson Roadrunners of the American Hockey League (AHL), the top-most minor league affiliate of the Arizona Coyotes. Joseph Lawrence Zanussi (born September 25, 1947 in Rossland, British Columbia) is a Canadian retired professional ice hockey player who played 149 games in the World Hockey Association and 87 games in the National Hockey League.  Zanussi's skating ability and agility earned him the nicknames 'Crazy Legs' and 'Tazmanian Devil' and although small for a pro hockey defenseman, Zanussi was a good bodychecker and possessed a big shot.  His only hockey card noted that he had a big smile.  He signed originally with the Detroit Red Wings and played with the New York Rangers, Winnipeg Jets, St. Louis Blues, and Boston Bruins.  He was part of the 1975 trade that brought Phil Esposito to the Rangers and sent Brad Park and Jean Ratelle to the Bruins.  Zanussi led the AHL in scoring at the time, with 19 points through 11 games. Rodrigue Gabriel Gilbert (born July 1, 1941) is a Canadian retired professional ice hockey forward who played for the New York Rangers in the National Hockey League (NHL).  He played right wing on the GAG (goal-a-game) line that also featured Vic Hadfield and Jean Ratelle.  He was inducted into the Hockey Hall of Fame in 1982, and was the first player in New York Rangers history to have his number retired.  Gilbert currently works for the New York Rangers Organization. Christopher Ellis Drury (born August 20, 1976) is a retired American professional ice hockey player who most recently played with the New York Rangers of the National Hockey League.  He currently serves as the assistant general manager for the New York Rangers and as the general manager of their American Hockey League affiliate, the Hartford Wolf Pack.  Drury is a Hobey Baker Award-winner with Boston University, a Calder Trophy winner with the Colorado Avalanche, a Stanley Cup champion with the Avalanche, a two-time Olympic silver medalist with the United States, and a former captain of the Buffalo Sabres and New York Rangers.  As a child, he also won the Little League Baseball World Series Championship with his hometown team from Trumbull, Connecticut.  Chris is the brother of the NHL hockey player Ted Drury. Marc LaBelle (born December 20, 1969) is a Canadian retired professional ice hockey winger.  LaBelle went undrafted and signed with the Montreal Canadiens in 1991 as a free agent, but played in the minors.  He then signed with the Ottawa Senators the next year, again as a free agent, but much like his spell in Montreal, he spent all of his time in the minor leagues.  LaBelle was then claimed by the Florida Panthers in the 1993 NHL Expansion Draft, spending three seasons in the International Hockey League with the Cincinnati Cyclones and the Milwaukee Admirals, but never played for the Panthers.  He signed with the Dallas Stars in 1996, where he finally played in the National Hockey League.  He played nine regular season games during the 1996–97 NHL season, scoring no points and collecting 46 penalty minutes.  He never saw NHL action again and continued to play in the IHL with second spells with the Admirals and the Cyclones as well as a spell at the Michigan K-Wings.  He also played one game in the Quebec Semi-Pro Hockey League for the Lachute Rapids.  He eventually settled in the Western Professional Hockey League, playing for the El Paso Buzzards as a player/associate coach, where he spent two seasons, but suffered a hand injury during a game against the New Mexico Scorpions which eventually led to his retirement.  He briefly came out of retirement during the 2006–07 ECHL season playing one more game for the Cincinnati Cyclones. Michael G. Barnett (born October 9, 1948 in Olds, Alberta) is a Canadian ice hockey executive currently serving as Senior Advisor to the President-General Manager of the New York Rangers.  He is best known in the world of hockey as a former agent representing sports icon Wayne Gretzky for two decades.  He was listed among the "100 Most Powerful People In Sports" by "The Sporting News" on six occasions from 1994 to 2000.  During his 12 years as President of International Management Group's hockey division, Barnett represented a who's who of the National Hockey League.  Barnett negotiated the playing and marketing contracts for Wayne Gretzky, Brett Hull, Jaromir Jagr, Sergei Fedorov, Paul Coffey, Joe Thornton, Mats Sundin, Lanny McDonald, Grant Fuhr, Marty McSorley, Alexander Mogilny, Owen Nolan, Daniel Sedin and Henrik Sedin and numerous others.  Whatever the form of contract, Barnett's creativity was legendary.  His ingenuity in finding language that challenged the NHL's Collective Bargaining Agreement, in finding products and companies for his clients that were groundbreaking in their launches, and his perpetual attention to the public relations of his clients, were all hallmark's of his career in athlete representation.  Following his two-decades as one of the most highly regarded agents in all of sports, Barnett went on to become the General Manager of the Phoenix Coyotes in the National Hockey League. Ryan VandenBussche (born February 28, 1973) is a Canadian retired professional ice hockey forward who played 14 years professional hockey, 9 National Hockey League (NHL) seasons with the New York Rangers, Chicago Blackhawks, and Pittsburgh Penguins.  He is best known for his pugilistic skills. John Albert "Jack" McDonald (November 24, 1921 in Swan River, Manitoba – March 13, 1990) was a professional ice hockey player who played 43 games in the National Hockey League with the New York Rangers.  John McDonald was born November 24, 1921 in Swan River, Manitoba.  Nicknamed Jack, a common practice of the era, McDonald was a big 6'1" 215 lbs, high-scoring left winger when he captained the Portage Terriers during the 1939-40 and 1941-42 season that won the Memorial Cup.  The 1942-43 season was spent with the Flin Flon Bombers of the Saskatchewan Senior Hockey League.  Jack McDonald was one of several wartime additions, joining New York Rangers for the 1943-44 season.  Playing in 43 NHL games, McDonald scored a respectable 10 goals, adding 9 assists.  Persuaded to play in the Western Hockey League by good friend Alex Shibicky, McDonald played up and down the west coast for the next 6 years.  After his hockey career he worked for the Hudson Bay Company as a bush pilot in northern Manitoba and Ontario.  A long time recreation professional Jack managed hockey rinks all over Canada.  His last stop was at the Burnaby Winter Club where he and Shibicky reunited some 30 years later and coached many players that went on to NHL careers.
Answer: Marty McSorley