Question: The person Mark Havery took over as interim senior coach of the Brisbane Lions for currently serves as the midfield coach for whom? 

Context paragraphs:
Josh Carr: Joshua "Josh" Carr (born 29 April 1980) is a former Australian rules footballer who played as a midfielder for Port Adelaide and Fremantle in the Australian Football League.  After originally being drafted by Port Adelaide and playing in their 2004 premiership side he returned to Western Australia to play with his brother Matthew Carr at Fremantle.  At the end of the 2008 AFL season he announced that he wanted to leave Fremantle and return to Port Adelaide.  He played his 200th game against Carlton on Round 20, 2009.  He played his 207th and last game in Round 17, 2010 against Adelaide.  He was an assistant coach at Port Adelaide, serving as the club's midfield coach.Carr has been appointed Senior Coach of SANFL side North Adelaide for the 2016-2018 seasons

Michael Voss: Michael Voss (born 7 July 1975) is a Brisbane Lions triple premiership captain, brownlow medalist and the former senior coach of the Brisbane Lions Australian Football League.  He is currently serving as the midfield coach of the Port Adelaide Football Club.

Tom Rockliff: Thomas "Tom" Rockliff (born 22 February 1990) is an Australian rules footballer playing for the Brisbane Lions in the Australian Football League (AFL).  In 2008 Rockliff, a medium-sized, smart and creative forward, was the leading goalkicker in the TAC Cup with 59 goals and won the Murray Bushrangers' Best and Fairest award, but was overlooked in the main draft.  He was, however, drafted by the Brisbane Lions with the fifth selection in the 2009 pre-season draft.  He is now known as one of the greatest draft steals in recent AFL history.  He served as the captain of the Brisbane Lions from 2015 to 2016.

Rhys Mathieson: Rhys Mathieson (born 10 January 1997) is a professional Australian rules footballer with the Brisbane Lions in the Australian Football League (AFL).  He was recruited by the Brisbane Lions with the 39th selection in the 2015 national draft.  At 1.87 metres (6 ft 2 in) tall and weighing 84 kilograms (185 lb), he plays as a Midfielder and is known for his ability to win contested ball.  He played his first senior game in round 9 of the 2016 season against Melbourne.  In his time at the Lions he has been known for his on-field antics, in particular his goal celebrations.  Upon kicking his first AFL goal, Rhys celebrated with a 'shotgun' move made famous by Hawthorn's Mark WIlliams and faced some criticism for this showboating, while the Lions were losing to GWS in round 17, 2016.

Merrett–Murray Medal: The Merrett–Murray Medal has been awarded annually since 1997, to the player adjudged the Brisbane Lions club champion over the immediately preceding Australian Football League (AFL) season.  It is named after Roger Merrett and Kevin Murray.  Merrett was a champion at the Brisbane Bears, while Murray was a legend at the Fitzroy Lions, the two clubs which merged to form the Brisbane Lions.  The voting system as of the 2017 AFL season, consists of the senior coach and assistant coaches scoring players based on their overall performance, influence on the game, team contribution and compliance with team values.  The most votes a player can receive in a single game is twelve.

Chris Fagan (Australian footballer): Christian "Chris" Fagan (born 23 June 1961) is a former Australian rules footballer who is the senior coach of the Brisbane Lions in the Australian Football League (AFL).  He spent his entire playing career in Tasmania, playing 263 senior games with Hobart, Sandy Bay, and Devonport.  Before being appointed head coach of Brisbane in October 2016, Fagan had spent long periods as an assistant coach at Melbourne (1999–2007) and Hawthorn (2008–2016).

Luke Power: Luke Power (born 8 January 1980) is a former professional Australian rules footballer who played for the Brisbane Lions and Greater Western Sydney Giants in the Australian Football League (AFL).  A member of the Brisbane Lions's 2001, 2002, and 2003 premiership winning teams, he played 282 games for the Lions before moving to Greater Western Sydney where he played his final season.  He is currently serving as the midfield coach of the Giants.

Mark Harvey: Mark Harvey (born 11 June 1965) is a former Australian rules football player who played for the Essendon Football Club.  In August 2013, he took over as interim senior coach of the Brisbane Lions following the resignation of Michael Voss as senior coach but on 3 October 2013, he resigned from the Lions.  He returned to Perth with the intention of taking a year away from hands-on involvement in football.  Harvey is currently serving as an assistant coach at the Essendon Football Club.

Mick Nunan: Michael 'Mick' Nunan (born 12 April 1949) is a former Australian rules footballer and coach who represented Sturt , Norwood and North Adelaide in the South Australian National Football League (SANFL) and Richmond in the then Victorian Football League (VFL).  He was also the last official senior coach of Fitzroy in 1996, resigning halfway through the season as news came out that the club was going to merge with the Brisbane Bears to form the Brisbane Lions.

Jed Adcock: Jed Adcock (born 15 November 1985) is a former professional Australian rules footballer and current coach who played for the Brisbane Lions and Western Bulldogs in the Australian Football League (AFL).  He was co-captain of the Brisbane Lions in 2013 and sole captain in 2014.  As of 2017, he is the assistant midfield coach at the Lions.

Supporting paragraphs: Mark Harvey Michael Voss
Answer: Port Adelaide Football Club