Wages at English Premier League clubs have shown a worrying 11pc leap to €1.5bn overall, according to an annual report of finances.
Business analysts Deloitte's report claims the rise is a concern because wages last year accounted for 67pc of the turnover of all 20 clubs -- a notable increase after a decade where the proportion had stayed at 58-62pc.
Experts believe the change may pose a problem to the English top flight with UEFA's new rules saying that, from 2012, clubs in European competition will only be allowed to spend what they earn.
The clubs' wage bill rose by £132m over the previous year and Dan Jones, director of Deloitte's Sport Business Group, said that should act as a warning -- especially in the light of Portsmouth being forced into administration.
Jones said: "The wage increase is definitely something people should be concerned about, and that will be even more the case when the UEFA initiatives are in full swing.
"This report clearly shows there is an issue there to be dealt with.
"The revenue story is still very positive and has proved resilient to the recession but the clubs have to get costs under control."