The Belgian, who represented Jean-Marc Bosman in a landmark case in 1995, insists that the rules only serve to block the rise of new powers on the continent
Lawyer Jean-Louis Dupont has claimed that Uefa's Financial Fair Play regulations are against the law and feels European football's governing body will not achieve their objectives with the current rules.
The Belgian, who made a name for himself when defending Jean-Marc Bosman's right in what eventually led to the Bosman ruling in 1995, decided to challenge FFP at the European Commission back in May 2013 and he remains adamant that Uefa's plans don't comply with European law.
"The premise that you shouldn't spend more than you earn is a good idea, but Uefa's solution is not the answer. The public will love it, but you'd need an economic, political and legal analysis to explain why it's wrong. The system is inadequate and illegal under European law," Dupont told Le Parisien.
"The rules create a number of restrictions, like limiting investments and limiting transfers. Clubs will employ fewer players and will pay lower wages. It also affects the right of free movement of capital, workers and providing services.
"Uefa says football shouldn't be a contest of money, buy you can only laugh when you look at the teams that dominate the Champions League. These are the richest teams out there.
"Forcing clubs to balance their finances is interesting, but it doesn't achieve Uefa's purported objectives. This effectively forbids clubs to invest and blocks the development process. The rich clubs will continue to dominate. A rich investor can no longer take an average club and build it into a European force."
Uefa confirmed last week that nine clubs are to be investigated further over a possible failure to comply with Financial Fair Play guidelines, with Paris Saint-Germain and Manchester City believed to be among the aforementioned teams.