Barnes, originally born in Burnley before moving to Countesthorpe as a youngster, joined the Leicester City Academy on 8 June, 2007. The son of Paul Barnes, a Leicester-born striker who played in all four tiers of English football, Harvey would often watch his father play, particularly in the early 21st century.
That footballing background would stand the aspiring winger in good stead and it wasn't long before he signed up onto the books with the Foxes. Harvey attended Greenfield Primary School before moving on to Leysland High School and then finally Countesthorpe College while growing up in Leicester.
His childhood included playing for Countesthorpe Athletic, Oadby Town and Whetstone Juniors before joining the Club at a similar time to current Foxes team-mates Hamza Choudhury, Kiernan Dewsbury-Hall and Luke Thomas. Like so many, his footballing path started long before people realise.
On his wall to this day is the red 2016/17 away shirt he wore on a mild December evening in Ribeira as Claudio Ranieri handed him a competitive debut at FC Porto’s Estádio do Dragão. He'd represented the Club's Development Squad and starred at the Hong Kong Citi Soccer Sevens, but this was a step up.
A loan move to Sky Bet League 1 side MK Dons was next up for Barnes, to play for a side managed by former Fox Robbie Neilson. Five goals in 23 appearances alerted followers of the Football League to the Leicester youngster's talents and he would return to play a key role for the Development Squad.
His brace at White Hart Lane in May 2017 would ultimately help preserve the Under-23s' status in Premier League 2 Division 1 and his reward was a new contract at King Power Stadium, before joining Championship side Barnsley on loan, netting another five goals in 14 outings.
He was recalled to King Power Stadium in January 2018 and soon made his domestic debut for the Foxes in an Emirates FA Cup Third Round stalemate at Fleetwood Town. A Premier League debut followed as he came off the bench to feature against Southampton in April 2018.
His education continued, on the other hand, with a hugely productive loan spell at West Bromwich Albion, scoring nine Championship goals in 26 appearances for the Baggies, before being recalled again in January 2019. By April, he'd struck his first Premier League goal in a 2-2 draw at West Ham United.
The 2019/20 season - the first full campaign under the management of Brendan Rodgers - was a breakthrough year for the boyhood Foxes fan. It started in some style, too, as Barnes scooped the Premier League Goal of the Month prize in August for a blistering half-volley in a 2-1 success at Sheffield United.
Four goals in six games illuminated the festive period, before later strikes at hometown club Burnley and two against Midlands rivals Aston Villa. It was a campaign which ended with both the Club's 2019/20 Young Player and Goal of the Month prizes.
The 2020/21 season, though, was even better and included an England debut as the football world took notice of Harvey's fearsome talents.
A rapid, direct winger who is always a threat coming inside from the flanks, Barnes hit 13 goals in all competitions, including the UEFA Europa League. His full England debut arrived, meanwhile, in a 3-0 win over Wales at Wembley Stadium in October 2020. Cruelly, though, injury struck in February 2021.
A key protagonist of City's early exploits in the competition, Harvey had to watch on as Leicester lifted the Emirates FA Cup for the first time in the Club's history back in May, but he returned this August to play a pivotal role as the Foxes won the FA Community Shield, beating Manchester City at Wembley.
He was there again on Saturday too, being a menace to the Wolves backline, as Leicester started the new season with a victory on the opening day of the 2021/22 Premier League term. As he signs a new deal on Filbert Way, it's clear for all to see that there is still so much to come from City's new No.7.