The "Football Insights" analytical center has presented a surprising overview of the performance of leading European clubs. They have created a graph showing the relationship between Elo ratings and team salary costs.
According to Lent.az, citing foreign media, the Elo football rating is a mathematical method for assessing the strength of football teams based on Arpad Elo's rating system adapted from chess. The rating takes into account the strength of the opponent, the importance of the tournament, and the outcome of the game (win/draw/loss) and changes dynamically after each game. In other words, the higher your rating, the stronger you are.
Salary sheets are taken from open-source "Capology", which checks every piece of data and is considered the most accurate available.
What was obtained? All clubs above the blue line are using their resources efficiently, while those below are not.
Effective teams include Manchester City, Barcelona, Liverpool, Chelsea, PSG, Aston Villa, Newcastle, Borussia Dortmund, Bayer Leverkusen, Stuttgart, Atalanta, Como and others. Inter, Brentford, Bournemouth, Brighton and especially Arsenal stand out by falling into the green zone. This means that they are exceeding expectations and performing better.
Less effective teams include Borussia Monchengladbach, Fiorentina, Sunderland, Marseille, West Ham, Tottenham, Atletico and others. Nice, Sevilla, Wolfsburg and Wolverhampton are in the red zone. Real Madrid is on the border of the average level, but closer to inefficiency - it shows a weak result.

The graph highlights that with current spending, each club could actually earn more than it actually does.