Morgan Rogers joined Manchester City from West Brom in 2019 and stayed until 2023 before joining Middlesbrough for £1m. Chelsea not only lost to Manchester City in the 2020 FA Youth Cup final, they also had a glimpse of their own future within the opposition ranks.

So much so that Chelsea's first-team squad in the new season could contain twice as many players who graduated from City's academy as have come through their own system. The latest addition is club record £117m signing Morgan Rogers, who scored against the Blues' Under-18s that night six years ago.

Fellow City academy graduate Cole Palmer was also on target in City's 3-2 victory at St George's Park, while Liam Delap led the line. In addition, new Chelsea manager Xabi Alonso's squad features Romeo Lavia, Jamie Gittens and Tosin Adarabioyo, all of whom also came through City's youth system.

Together with Rogers, Palmer and Delap, the six players account for almost £300m in transfer fees paid by Chelsea since 2023. By contrast, Alonso is only likely to have three permanent members of his senior squad who came through Chelsea's Cobham academy: Levi Colwill, who played in that defeat, captain Reece James and defender Josh Acheampong. Trevoh Chalobah also remains a Chelsea player but is in advanced talks over a move to Serie A side Como.

There are several reasons for Chelsea's interest in players developed from City, but one is the success of Palmer, who moved between the clubs in 2023 for £40m plus £2.5m in add-ons and has become one of the Premier League's standout performers. One former insider told BBC Sport that anyone who comes from City "knows what good looks like".

Another factor is Joe Shields, who worked in City's academy recruitment department and is now involved in both youth and senior recruitment at Stamford Bridge. Other clubs also have ex-Manchester City employees, including Manchester United with senior leaders Omar Berrada and Jason Wilcox. Clubs, meanwhile, are incentivised to sell academy-developed players because the fees can be recorded as pure profit for accounting purposes under Premier League and Uefa spending rules. Chelsea's sale of Tyrique George to Everton this summer is one example.

Former City manager Pep Guardiola previously acknowledged the difficulty of giving academy graduates opportunities in a team that consistently competes for major honours. While players like Rogers were deemed not ready for first-team football, others, including Palmer and Jadon Sancho, were offered contracts and squad roles but chose to continue their development elsewhere.

At Chelsea, they have needed to sell academy players under both the Roman Abramovich ownership and now Todd Boehly and Clearlake Capital since 2022 to balance the substantial spending on new signings. Chelsea have instinctively looked to City's ranks to see how they might offer a suitable home for young talent.

They employ a number of former City staff members, including first-team coach Calum McFarlane and recently promoted academy director Glenn van der Kraan. There was also a brief spell for former City executive Tom Glick as Chelsea's president of business, while former Chelsea head coach Enzo Maresca and several members of his coaching staff previously worked at the Etihad. Maresca has since returned to City.

There are further links between City's academy and Chelsea. James McAtee and CJ Egan-Riley, both of whom played in the 2020 FA Youth Cup final, were previously targeted by Strasbourg, the French club owned by Chelsea's parent company, BlueCo. Chelsea also held an interest in former City academy player Michael Olise before his move to Bayern Munich and previously explored a deal for defender Nico O'Reilly.

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Palmer and Delap spent several years together in City's academy. Chelsea ended last season without a trophy and finished 10th in the Premier League, but their academy teams won league and cup titles.

It highlights the quality of the talent coming through under the leadership of Shields and Van der Kraan, with pathways director Jack Francis providing continuity as he enters his 16th year at the club. The Cobham academy was previously led by Neil Bath and Jim Fraser, who built a system capable of winning five consecutive FA Youth Cups, including three wins in a row against City, to match the long-standing record set by Manchester United's 'Busby Babes' in the 1950s.

Chelsea also won the Uefa Youth League in 2015 and 2016 and remain the only English club to have won the competition. However, Chelsea were handed a transfer ban in 2019 over breaches relating to youth recruitment and are currently serving restrictions on registering academy players following historical offences dating back to the Abramovich era.

That first transfer ban helped create opportunities for Tammy Abraham, Mason Mount, Fikayo Tomori, Callum Hudson-Odoi, Ruben Loftus-Cheek, Andreas Christensen and Reece James to establish themselves in the first team under Frank Lampard.

Those were heady days for Chelsea's academy, but City were rapidly expanding under their Abu Dhabi ownership and investing heavily in youth development, an area exempt from financial spending restrictions. Such was the dominance of the two academies that they had an informal agreement not to sign players from one another, helping to avoid inflated wages and transfer fees at youth level. That arrangement has since ended.

Manchester United, Liverpool and Arsenal also began a new wave of investment in their academies after Brexit made it impossible to sign overseas players under the age of 18. Notably, Liverpool signed now-England youth international Rio Ngumoha from Chelsea in 2024, prompting restrictions on youth scouts from a number of rival clubs attending matches.

While Chelsea were under new ownership, Bath was developing a fresh strategy. However, after Fraser left the club following a disagreement with senior figures, Bath also departed and former City staff moved into senior academy positions. That transformation has surprised many within academy football, where stories persist of fierce rivalries between the two clubs, heated confrontations behind the scenes and intense celebrations after victories at lower age-group levels.

A genuine rivalry developed between the dominant academy systems of the north and south over the past decade. Asked about the rivalry in 2025, Delap said: "We hated each other in games." He added: "But everyone's man enough now that, off the pitch, we can be friends. I used to play against Levi Colwill every year. It was a great battle. There are too many matches to remember, but we [City] beat them in the Youth Cup final [in 2020]."

There have since been substantial changes in coaching methodology at Chelsea. Scores of new staff have arrived and those who have remained at the club have had to adapt. Liverpool women's manager Gareth Taylor spent nine years in City's academy and recalls how former Barcelona coach Rodolfo Borrell helped to establish a Johan Cruyff and Guardiola-inspired coaching philosophy.

He described Delap as playing with a "real edge", Rogers as "really good and really humble", and Palmer as a player who "used to run rings around opponents" and would "never get nervous".

Taylor said: "We designed a really clear playing style. From under-11s and under-12s all the way up to the under-23s, you could see really clear alignment in the way we played, our identity and our style." The City-modelled revolution has made an impact on both the senior and youth teams at Stamford Bridge. Now Chelsea, with Alonso coming in, will hope the approach brings more rewards.