Question: What former top scoring striker for Watford F.C. was sold in January 2008 to another team?

Context articles: 2007–08 Watford F.C. season
Marlon King
1982–83 Watford F.C. season
Sport in Plymouth
Chiara Gazzoli
Watford F.C. Under-23s and Academy
Gilbert Bailliu
The Goaldiggers Song
James Meara
Skilly Williams

Following relegation from the Premier League in 2006–07, Watford started the 2007–08 season strongly, winning eleven of their opening sixteen games and opening up an 8-point gap at the top of the Championship table.
 However, after the departure of Adam Johnson to Middlesbrough on 11 November 2007 Watford's form declined; they won six of their next sixteen Championship games, and only one of their final sixteen.
 In January 2008 Watford sold captain Gavin Mahon and top scorer Marlon King, but purchased Mat Sadler, Leigh Bromby and John Eustace.
 Watford finished the 2007–08 season in 6th position, and were eliminated in the play-off semi finals to Hull City.
Marlon Francis King (born 26 April 1980) is a former professional footballer who played as a striker.
During the 1982–83 English football season, Watford F.C. competed in the Football League First Division, after being promoted from the Second Division the previous season.
 Under Graham Taylor's management, Watford finished second in the First Division – their highest ever league finish.
 As a result, Watford qualified for European competition for the first time.
 Luther Blissett finished the season as the division's top scorer, with 27 league goals.
Sport in Plymouth, Devon, England, dates back to the 19th century with its first club, Plymouth United F.C., being founded in 1886.
 It is the largest city in England never to have had a football team in the first tier of English football.
 It is home to Plymouth Argyle Football Club, who play in the Football League Two (fourth tier of English football) at the Home Park stadium in Central Park.
 It is Plymouth's only professional football team, however the city used to have another team called Plymouth United F.C. dating back to 1886.
 The club takes its nickname from the group of English non-conformists that left Plymouth for the New World in 1620: the club crest features the Mayflower, which carried the Pilgrims to Massachusetts and the club's mascot is named Pilgrim Pete.
Chiara Gazzoli is a former Italian football striker.
 She played for ACF Milan, Foroni Verona, Torres CF and ASD Fiammamonza between 1994 and 2007, when she turned to 7-a-side football.
 She won four leagues with Milan, Foroni and Fiammamonza, and was the league's top scorer in and .
 Her 54 goals in 2003 make her the second top scoring player in one season in Serie A, next to Elisabetta Vignotto's 1972 56-goal record.
 She was also the top scorer of the 2004 UEFA Women's Cup.
Watford F.C. Under-23s and Academy is the youth setup of Watford.
 The Under-23 team is effectively Watford's second-string side, but is limited to three outfield players and one goalkeeper over the age of 23 per game following the introduction of new regulations from the 2012–13 season.
 They play in Premier League 2 Division 2 and also compete in the Checkatrade Trophy.
 The Under-18 side is the most senior team in the Academy.
Gilbert Bailliu (born 4 September 1936 in Bruges) is a Belgian former football player.
 Bailliu was an easily scoring striker.
"The Goaldiggers Song" is a charity single by Elton John, released in 1977.
 The song is written for the Goaldigger's charity to provide playing fields in under-privileged areas.
 At the time in 1977, Elton John was living reclused in London; the only time he would go out was to go see his football team Watford F.C. play.
 The single never charted anywhere, as it was a limited charity release-only 500 copies were pressed, approximately half of which were signed by Elton.
 It was available for a cost of five UK pounds by mail-order only and featured Elton and a number of other British celebrities including Jimmy Hill and Eric Morecombe in conversation on the B-side.
 The tapes were destroyed after the pressing, so no other official copies of the recording exist.
James Stephen Meara (born 7 October 1972), also known as Jim Meara, is a former footballer who played for Watford F.C. and Doncaster Rovers FC as a midfielder.
Reginald George "Skilly" Williams (4 January 1890 – 19 June 1959) was an English association football player.
 Born in Watford, he played primarily as a striker during his amateur career, but later switched to become a goalkeeper.
 After playing for Leavesden Mental Hospital's football team, as well as for Hertfordshire, Williams joined Watford as an amateur in 1910, turning professional in 1914.
 During his first season as a professional, Watford won the 1914–1915 Southern Football League title.
 League football was then interrupted for four seasons due to the First World War.
 Following its resumption in 1919, Williams again played a part as Watford finished runners up to Portsmouth on goal average.
 Watford entered the Football League the following season, and Williams stayed with the club for a further six seasons.
 He holds the record for the most Watford appearances by a goalkeeper;83 in the Southern League, 240 in the Football League, 17 in the FA Cup and one in the Southern Charity Cup.
 He stayed at Watford until 1926, before moving to Brighton & Hove Albion on a free transfer.