In response to these high-profile departures, Monaco sought to rebuild their squad by targeting direct replacements. They secured the signings of defender Terence Kongolo and forward Keita Balde. Unfortunately for the French club, these acquisitions failed to deliver the desired impact over the long term. The cohesive, high-performing squad that had challenged Europe’s elite quickly fractured. Within just two years of their historic league triumph and European run, Monaco went from the summit of French football to the brink of disaster, narrowly escaping relegation from Ligue 1. The rapid decline demonstrated that even the most astute scouting networks can struggle to rebuild when key players are stripped away simultaneously, regardless of the size of the compensation received.
Within the Premier League, Manchester City’s transfer activity also had a profound impact on their direct competitors. Between 2009 and 2018, the domestic rival from which City purchased the most players was Arsenal. Over this period, the Manchester club successfully acquired four key players from the North London side, systematically weakening a direct rival while strengthening their own squad. For Arsenal, the loss of these key assets disrupted their squad continuity and hampered their ability to sustain a serious Premier League title challenge during those years. The constant rebuilding process prevented the Gunners from matching the consistency of a rapidly ascending Manchester City.
The financial influence of Manchester City also extended to clubs with whom they had no direct transfer dealings, raising questions about competitive balance. While some clubs benefited from direct sales, others found themselves disadvantaged by the financial boost given to their immediate domestic rivals. This dynamic was particularly visible in Portugal’s Primeira Liga, where the traditional "Big Three" consists of Benfica, Porto, and Sporting.
During the era in question, Manchester City paid very similar, substantial transfer totals to both Benfica and Porto for some of their brightest talents. In contrast, Sporting received no transfer fees from the Manchester club. Throughout the period between 2009 and 2018, Sporting failed to win a domestic league title. While domestic football dominance is influenced by a multitude of sporting and structural factors, the financial disparity introduced by City’s targeted purchasing cannot be ignored. Sporting’s direct rivals received significant capital injections that might not have been available had the wider transfer market followed more stringent financial constraints, potentially compromising Sporting’s ability to compete on equal terms in the transfer market and on the pitch.
Beyond these direct and indirect club-to-club dynamics, the reach of Manchester City’s spending extended into the lower leagues of English football through the mechanism of sell-on clauses. When City purchased high-profile players from established Premier League clubs, significant portions of those fees were redirected to the smaller clubs that had originally developed the players.
