Question: Clancy Barone worked with which Chargers player as an offensive coach?
Context: Matthew Andrew Cavanaugh (born October 27, 1956) is an American football coach and former player who is the offensive coordinator for the Washington Redskins of the National Football League (NFL).  He is a former American football quarterback in the NFL who played from 1978 to 1991.  In the course of his career as a professional football player, he earned two Super Bowl rings.  Since his retirement, Cavanaugh has worked as an offensive coach and coordinator, for teams including the San Francisco 49ers, the Chicago Bears, and the Baltimore Ravens, where he earned a third Super Bowl ring as a coach. Vaughn Antoine Parker (born June 5, 1971) is a former American football offensive tackle for the San Diego Chargers and Washington Redskins of the National Football League.  He played high school football at St. Joseph's Collegiate Institute in Buffalo, New York where he was named to the All-Western New York and All-Northeast teams.  Parker played college football at the University of California, Los Angeles (UCLA), where he became only the second offensive player in school history to be named to the all-conference team three times.  Parker was drafted in the second round (63rd overall) of the 1994 NFL Draft by the Chargers.  His rookie year, the Chargers won the AFC Championship and faced San Francisco in Super Bowl XXIX.  Parker spent ten seasons playing for the Chargers, with his final season (2003) there cut short by a season-ending knee injury.  He signed with the Redskins for the 2004 season and appeared in one game before being waived at the conclusion of the season. Clarence Barone is the current tight ends coach of the Minnesota Vikings.  Barone coached as the offensive line coach for the Denver Broncos in 2010, as well as from 2015-2016.  As the Offensive Line Coach for the Denver Broncos, his offensive line paved the way to victory in Super Bowl 50 over the Carolina Panthers.  He also served as the Broncos' tight ends coach in 2009, as well as the 2011-2014 season, which includes their Offensive record breaking season of 2013 and an appearance in Super Bowl XLVIII.  He has also served as offensive line and tight ends coach for the Atlanta Falcons, as well as tight ends coach for the San Diego Chargers.  Barone worked with All-Pro players Alge Crumpler (Falcons) and Antonio Gates (Chargers), and Julius Thomas (Broncos) all of whom made multiple Pro Bowl appearances under his guidance. Francis Michael "King" Clancy (February 25, 1902 – November 10, 1986) was a Canadian professional ice hockey player, referee, coach and executive.  Clancy played 16 seasons in the National Hockey League (NHL) for the Ottawa Senators and Toronto Maple Leafs.  He was a member of three Stanley Cup championship teams and won All-Star honours.  After he retired in 1937, he remained in hockey, becoming a coach for the Montreal Maroons.  Clancy next worked as a referee for the NHL.  He joined the Maple Leafs organization and worked in the organization as a coach and team executive until his death in 1986.  On January 1, 2017, in a ceremony prior to the Centennial Classic, Clancy was part of the first group of players to be named one of the '100 Greatest NHL Players' in history. Charlie Taaffe (born April 20, 1950) is an American gridiron football coach.  After retiring in 2014, he was hired by a company called Quarterback Country to run a year-round quarterback training and development program.  He served as offensive coordinator for the UCF Knights from 2009 to 2014.  Taaffe's coaching career stretches back to 1973, when he was an offensive coach for the University at Albany.  From 1984 to 1986, he was an offensive coordinator for Army, as well as for the Maryland Terrapins from 2001 to 2005, and the Pittsburgh Panthers for the 2006 season.  Taaffe also served as the head football coach at The Citadel from 1987 to 1996, and was the head coach of the Canadian Football League Montreal Alouettes and Hamilton Tiger-Cats. Jack Reilly (born May 22, 1946 in Boston, Massachusetts) is a former college football and National Football League offensive coach.  He served as an offensive coordinator with both the St. Louis Rams and the Dallas Cowboys.  Reilly's background is in the Don Coryell-Ernie Zampese style West Coast offense. Antonio Ethan Gates Jr. (born June 18, 1980) is an American football tight end for the Los Angeles Chargers of the National Football League (NFL).  He has been selected into the Pro Bowl eight times and is a five-time All-Pro. Rosie Barone is a nationally ranked women's Physique and Figure competitor.  Rosie is married to Clancy Barone of the Minnesota Vikings.  Rosie has also been featured on the website Athleteswives.com and featured as one of the hottest wives in the NFL. The San Diego Chargers season was the franchise's 45th season in the National Football League (NFL), the 55th overall, and the second under head coach Mike McCoy.  After former Chargers' offensive coordinator, Ken Whisenhunt, was hired by the Tennessee Titans to become their new head coach, the Chargers promoted Frank Reich to replace him.  Reich spent last season as the Chargers' quarterback coach. Anthony Andrew "Tony" Barone, Sr. (born July 20, 1946) is an American basketball coach and scout.  A native of Chicago, he is the former head coach of the Memphis Grizzlies of the National Basketball Association (NBA).  Barone was appointed as the team's interim coach by Grizzlies general manager Jerry West after West fired Mike Fratello on December 28, 2006.  Prior to landing his first head coaching job after Fratello's dismissal, Barone had served as an assistant coach for five seasons.  Barone is also the Grizzlies' director of player personnel.
Answer: Antonio Ethan Gates Jr.