Question: Which former professional footballer became manager of Watford F.C. in July 2011?

full_context: Document 1: 2010–11 Watford F.C. season: Watford Football Club (also known simply as Watford, or as The Hornets) is an English association football club from the town of Watford, in Hertfordshire. The 2010–11 English football season officially began on 1 July 2010, and ended on 30 June 2011, although Watford only played competitive fixtures between August and May. The team competed in the Football League Championship for the fourth consecutive season, following relegation from the Premier League in 2006–07. The club chairman was Graham Taylor, who as a manager took Watford from the Fourth Division to the top division of English football. Their manager was Malky Mackay, and their captain was central midfielder John Eustace.
Document 2: 2006–07 Burnley F.C. season: The 2006-07 season was Burnley's 7th season in the second tier of English football. They were managed by Steve Cotterill in his third full season since he replaced Stan Ternent at the beginning of the 2004-05 season.
Document 3: 2009–10 Watford F.C. season: Watford Football Club are an association football club from Watford, Hertfordshire, England. Home matches were played at the club's stadium, Vicarage Road, which had a capacity of 17,504 for the 2009–10 season. Watford's season officially began on 1 July 2009 and concluded on 30 June 2010, although competitive matches were only played between August and May. They competed in the Football League Championship, the second highest division in English football, following their relegation from the Premier League in 2007.
Document 4: 2000–01 Burnley F.C. season: The 2000–01 season was Burnley's 1st season in the second tier of English football since 1994/95. They were managed by Stan Ternent in his third full season since he replaced Chris Waddle at the beginning 1998–99 campaign.
Document 5: 1977–78 Watford F.C. season: Watford Football Club is an English football team, based in Watford, Hertfordshire. 1977–78 was the club's first season under the management of Graham Taylor, and its last in the fourth tier of English football. Watford ended the season as champions of the Football League Fourth Division with 71 points, the club's highest Football League total under the system of two points for a win, and three points short of the all-time Football League record set by Graham Taylor's Lincoln City side in 1975–76. The season also marked new club records for the most league wins in a season (30), most home wins (18), most away wins (12), and most away goals scored (42).
Document 6: 2007–08 Burnley F.C. season: The 2007-08 season was Burnley's 8th season in the second tier of English football. They were managed by Steve Cotterill in his fourth full season since he replaced Stan Ternent at the beginning of the 2004–05 season. He was sacked on 8 November 2007 after a poor run of results and replaced by Owen Coyle. Caretaker manager Steve Davis was put in charge of first team duties for the match against Leicester City on 10 November 2007.
Document 7: 2011–12 Watford F.C. season: Watford Football Club (also known simply as Watford, or as The Hornets) is an English football club from Watford, Hertfordshire. The team competed in the Football League Championship in 2011–12, their fifth consecutive season in the second tier of English football since their relegation from the Premier League in 2006–07. The 2011–12 season consisted of pre-season friendlies in July 2011, followed by competitive matches in the Football League, FA Cup and Football League Cup between August 2011 and April 2012. Assistant manager Sean Dyche became manager in July 2011, following the departure of Malky Mackay. The club's captain for the season was central midfielder John Eustace. Watford's chairman was Graham Taylor, who previously took Watford from the Fourth Division to the First Division as manager.
Document 8: Roy Hodgson: Roy Hodgson ( ; born 9 August 1947) is an English football manager and former player, currently managing Premier League club Crystal Palace.
Document 9: Watford F.C.: Watford Football Club is a professional football club based in Watford, Hertfordshire, England, that plays in the Premier League, the highest level in the English football league system. Founded in 1881 as Watford Rovers, the club entered the FA Cup for the first time in 1886, and the Southern League a decade later. After finishing the 1914–15 season as Southern League champions under the management of Harry Kent, Watford joined the Football League in 1920. The club played at several grounds in its early history, before moving to a permanent location at Vicarage Road in 1922, where it remains to this day. Watford spent most of the following half century in the lower divisions of The Football League, changing colours and crest on multiple occasions.
Document 10: Sean Dyche: Sean Mark Dyche ( ; born 28 June 1971) is an English former professional footballer, who is currently the manager of Premier League side Burnley, a position he has held since October 2012. During his playing career, Dyche played as a centre-back, making his professional debut in 1990 and representing Chesterfield - whom he captained and scored for in an FA Cup semi-final - Bristol City, Luton Town, Millwall, Watford and Northampton Town. He was promoted with four of his six clubs. After retiring as a player in 2007 he coached at Watford, including a stint as manager between June 2011 and July 2012.
Document 11: Sam Allardyce: Samuel Allardyce ( ; born 19 October 1954), known as "Big Sam", is an English football manager and former professional player, who most recently managed Crystal Palace from December 2016 to May 2017.
Document 12: 2007–08 Watford F.C. season: 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.
Document 13: 2011–12 Stevenage F.C. season: The 2011–12 season was Stevenage F.C.'s second season in the Football League, where the club competed in League One. This article shows statistics of the club's players in the season, and also lists all matches that the club played during the season. Their sixth-place finish and subsequent successful play-off campaign meant it was Stevenage's first ever season of playing in League One, having only spent one season in League Two. The season also marked the second season that the club played under its new name – Stevenage Football Club, dropping 'Borough' from its title as of 1 June 2010. The season started out as the third year in charge for manager Graham Westley during his second spell at the club; having previously managed the Hertfordshire side from 2003 to 2006. However, Westley left Stevenage in January 2012, and joined fellow League One side Preston North End. The vacant managerial position was filled by former Colorado Rapids manager Gary Smith, signing a contract until 2014.
Document 14: David Unsworth: David Gerald Unsworth (born 16 October 1973) is an English former professional footballer and the current manager of Everton U23. As a player, Unsworth played as a centre-back or left-back from 1991 until 2009.
Document 15: Gareth Southgate: Gareth Southgate (born 3 September 1970) is an English football manager and former player who played as a defender or as a midfielder. He is currently the manager of the England national team. He won the League Cup with both Aston Villa and Middlesbrough (in 1995–96 and 2003–04 respectively, and as captain), and captained Crystal Palace to win the First Division championship in 1993–94. He also reached an FA Cup and UEFA Cup final as a player, and made 57 appearances for the England national team, featuring in the 1998 FIFA World Cup and both the 1996 and 2000 European Championships. His playing career ended in May 2006 at the age of 35, and after more than 500 league appearances, he was subsequently appointed Middlesbrough manager. He served as manager of Middlesbrough from June 2006 until October 2009, then managed the England U21 team from 2013 to 2016, before becoming the England national team manager in 2016.
ground_truth: Sean Dyche