Carroll attended Parmiter"s School in Garston, Hertfordshire, near his home town of Watford, and he captained the school football team at district and county level The game finished 0–0 and went to penalties, Carroll scored his penalty, but Tottenham lost the shoot-out 7–6.
He plays as a deep-lying creative central midfielder, and is particularly valued for his high passing percentage accuracy and creativity. His style of play has drawn comparisons with former teammate Luka Modrić. He also played for the Hertfordshire county side, before linking up with "s Under-16 squad, winning the Legnago Tournament in Italy in 2008.
In June 2010, he signed a professional contract with Tottenham after scoring 10 goals in 23 games for their Academy side.
He made his first senior Tottenham appearance against Heart of Midlothian in the Europa League play off second leg on 25 August 2011, and was assigned the squad number 46. He then featured in four group stage games.
On 20 September 2011 he started a League Cup third round match away to Stoke City. On 27 January 2011, he joined Leyton Orient on loan until the end of the 2010-2011 season.
He made his senior debut in the 1–1 draw at Bournemouth on 5 February before going on to make 12 league appearances.
On 30 January 2012, Carroll joined Championship side Derby County on loan until the end of the 2011-2012 season. Carroll scored on his debut a day later in a 3–2 defeat at Barnsley, marking his first goal in competitive football. Carroll was a regular in the Derby side and played in both central midfield as well as on the right-wing due to an injury crisis.
After suffering a minor injury he finished his loan spell at Pride Park with 12 league appearances.
He made his Premier League debut on 3 November 2012, replacing Kyle Walker in the 79th minute of a 1–0 defeat at home to Wigan Athletic. At the end of the 2013 Summer transfer window, Carroll completed a loan move to Queens Park Rangers, reuniting with former manager Harry Redknapp.
On 22 August 2014, Carroll signed for Swansea City on a season-long loan. Carroll went on to score his first competitive goal for Tottenham on 10 December 2015 as a youthful Spurs side routed Monaco 4–1 in the Europa League, alongside a first-half hat-trick from Erik Lamela.
In March 2011, Carroll was called up to represent the England Under-19 team for the first time in a friendly away to the Netherlands.
In November 2011, Carroll was called up to the England under-21 squad, for qualifying matches against Iceland and Belgium. He was an unused substitute in the 5–0 victory over Iceland.
His first appearance of 2012 came against Cheltenham Town in a 3–0 FA Cup win. In addition to his league appearances he also played twice against Arsenal in the FA Cup. On 5 August 2015, Carroll scored the second goal of a 2–0 win against A.C. (before Christ) Milan in the 2015 edition of the Audi Cup. On 26 December, Carroll scored Tottenham"s third goal, and his first league goal, from the bench against Norwich to help them win 3–0. He made his under-21 debut on 21 March 2013, replacing Jordan Henderson in the 74th minute of a 3–0 win against Romania. He scored his first goal for England under-21"s on 13 August 2013, in a 6–0 win against Scotland.
He plays hurling with his local club Seir Kieran and has been a member of the Offaly senior inter-county team since 2011. He is currently a member of the Seir Kieran under-21 and senior teams. Carroll first played for Offaly as a member of the county"s minor hurling team in 2008.
He is currently a member of the Offaly under-21 team
