A European Football Association (UEFA) report said that the revenue of the thirty largest clubs on the continent is equal to that of 682 other clubs in 2018, as the wealth is still in the hands of a few clubs.
The UEFA added in its annual report on the clubs that the revenues of 712 teams in the highest levels in 55 leagues in Europe reached 21 billion euros in the fiscal year 2018, an increase of 20% over the previous year.
UEFA explained that the revenues of the five major championships (England, Germany, Spain, France and Italy) reached 75%, which is a record number, and that 49% of this percentage went to thirty teams only.
UEFA President Alexander Tsevrin said, "The report shows a number of continuing risks against the stability and success of European football."
"This includes the risks of attracting revenue fueled by globalization, the dispersed media landscape, and instances of excessive dependence on transfer revenue."
The report warned that profits from television broadcasts caused salaries to increase by 9.4%, equivalent to 1.2 billion euros, the largest increase in revenue, and that La Liga clubs account for 332 million euros in this increase.
Salaries consume 64% of revenue, and the report said it was "more than any other industry."
"UEFA will monitor this carefully, as any further salary increase in 2019 will consume profits," the report added.
The transfers were not included in the revenue statistics, as they come in a separate report on the sale of property, although many clubs rely on this for their revenues.
UEFA said that the club's total income has reached six billion euros in transfers, an increase of 25%.
He explained that the clubs in Portugal, France and Belgium depend on transfers for their revenues and that they have reached at least 50%.
"Clubs that sell players have become more dependent on transfers to cover the salaries of their players and other expenses. This over-reliance may lead to risks," he added.