Question: Ricky Sbragia is the manager of what under 23 football club that is the most senior of Manchester United's youth teams and the club's former reserve team?

Context paragraphs:
Olympiacos F.C. Youth Academy: Olympiacos F.C. Youth Academy is the football academy system of Greek professional football club Olympiacos consisting of six official youth teams (Under-10, Under-13, Under-14, Under-15, Under-17 and Under-20), based on the young athletes' age.  Other age-based youth teams (e.g. Under-8) are also part of the academy, however they do not appear as official youth teams.  Olympiacos' U15, U17 and U20 teams all play in Greek Superleague's youth competitions (Superleague U15, U17 and U20 respectively), while the U20 team is a regular participant in the UEFA Youth League.  The latter also featured in the 2012-13 Next Gen Series, reaching the quarter-finals of the competition.

2002–03 Watford F.C. season: The 2002–03 season marked Watford Football Club's third consecutive season in the Football League First Division, following relegation from the Premier League in the 1999–2000 season.  The club was managed by its former reserve team manager Ray Lewington, following the dismissal of Gianluca Vialli at the end of 2001–02.  The club finished 13th in the First Division, reached the semi-final of the FA Cup, and were eliminated in the first round of the League Cup.  Watford were operating under severe financial constraints following the collapse of ITV Digital, and at the end of the season were forced to offload several first team players, including Tommy Smith, Gifton Noel-Williams, Stephen Glass and the club's record signing at the time Allan Nielsen.

Jimmy Murphy (footballer): James Patrick Murphy (8 August 1910 – 14 November 1989) was a football player who made over 200 appearances for West Bromwich Albion and won 15 caps for Wales.  He later became manager of the Welsh national team.  Murphy is most famous for being a strong, influential figure at Manchester United from 1946 until the 1970s, as assistant manager, chief coach, reserve team manager and a full-time scout, although he disliked the limelight and preferred to work quietly behind the scenes.  Following the Munich air disaster on 6 February 1958, Murphy temporarily took over as Manchester United manager until the end of the 1957–58 season, steering the club through its greatest crisis.  Murphy had not been on the Munich aeroplane, as he had missed the trip due to managing Wales against Israel in Cardiff on the same night as the Red Star Belgrade versus Manchester United match in Belgrade, Yugoslavia.  The victory for Wales over Israel that night ensured that Wales qualified for the 1958 FIFA World Cup in Sweden.

Derry and District League: The Derry and District League is an amateur football league in Derry.  The league includes youth and senior football teams.  The Senior Sunday League has two divisions, the Premier and the First Division.  The Youth Leagues have one league for each age group, from under-10 up to under-17.  Teams such as Don Bosco's and Tristar Boys have numerous teams competing at every level.  Other senior teams include Brandywell Harps, Trojans and, in the First Division, Lisahally.  The league has witnessed a rise in popularity in recent years, and youth teams, such as Foyle Harps and the Derry and District Youth Select have competed on an international level both in China and Spain respectively.  There is also a Saturday Morning League operating in Derry.  The League also sends youth teams to the Foyle Cup and in 2005 the under-16 team finished runners up in the competition, losing out to Ferencvaros.  Many of the players in that team have since signed professional contracts.  Kevin Deery, Barry Molloy and Patrick McCourt are now Derry City players, after playing youth football in the league.

Fivemiletown United F.C.: Fivemiletown United Football Club is an intermediate-level football club who play in the Intermediate A division of the Mid-Ulster Football League in Northern Ireland.  The club is based in Fivemiletown, County Tyrone.  The club is currently managed by Scott Robinson.  The current secretary is Mike Long.  The Reserves currently play in Fermanagh and Western Division 3.  Fivemiletown United Youth Academy provides youth teams from U9 up to U19 and have also a Youth Academy for 4 Year olds and up.  The club's Youth teams play in the Brendan Keogh Youth League and the Mid Ulster Youth League.Long-term clubman Davy McQuigg is the club's current chairman and has served in nearly every role in the club in over 30 years involved with the club.  He was awarded a BEM (British Empire Medal) in January 2015 as part of the Queens New Years honours list for his services to youth football.  The 2014/15 season was the club's most successful season in the intermediate A section as new manager Jason Gillespie guided them to a 3rd-place finish which is the club's highest ever finish.

Manchester United F.C. Reserves and Academy: Manchester United Football Club Under-23s is the most senior of Manchester United's youth teams and the club's former reserve team.  They play in the Premier League 2, the highest tier of the Professional Development League.  The team is effectively Manchester United'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 2016–17 season, an increase from the age of 21 which was introduced in 2012–13.

Ricky Sbragia: Richard Sbragia (born 26 May 1956) is a Scottish football coach and former player who is currently the manager of Manchester United Under-23s.

Comber Recreation F.C.: Comber Recreation Football Club (or more commonly Comber Rec.)  is an intermediate, Northern Irish football club based in Comber, playing in Division 1A of the Northern Amateur Football League.  The club was founded in 1950 as Comber Youth Club.  Its home ground is located at Parkway in Comber.  The team is managed by Phil Mcdonagh.  In addition to its first XI, Comber also fields two reserve teams and four youth teams.  The 2nd XI currently play in the Amateur League Division 3A while the 3rd XI are in the 3rd Division of the Newcastle and District Football League having joined it in the season 2015/16.  At the end of their first season, they gained promotion to Division 2.  In 2005, Comber's youth teams started playing in the East Antrim Youth League and then in 2012 the under-14 team moved to the lisburn youth league while the under-15 and 17 teams moved to the South Belfast Youth League.

Stoke City F.C. Under-23s and Academy: Stoke City Football Club Under-23s is the most senior of Stoke City's youth teams and the club's former reserve team.  The Under-23 team is effectively Stoke City's second-string side.  They play in Premier League 2 Division 2.  The team also competes in the Premier League Cup and the Staffordshire Senior Cup.

Swansea City A.F.C. Under-23s: Swansea City Association Football Club Under-23s is the most senior team of Swansea City's youth teams and are the club's former reserve team.  From the 2015–16 season, they will play in Division 2 of the Professional Development League 1 and will also compete in the U21 Premier League Cup.  The Under-21s and Under-18s previously played in the Professional Development League 2 South Division.  The Under-21s play the majority of their home games at Swansea City's Youth Academy in Landore, Swansea with occasional matches taking place at the Liberty Stadium.

Supporting paragraphs: Ricky Sbragia Manchester United F.C. Reserves and Academy
Answer: Manchester United Football Club Under-23s