La Liga president Javier Tebas has continued his attack on Paris Saint-Germain and Manchester City for what he called "financial doping", saying Neymar and PSG were "peeing" in the "swimming pool" by completing a world-record €222 million move from Barcelona.
The Ligue de Football Professionel (LFP) has given its backing to PSG, who are owned by Qatar Sports Investments, a Doha-based sovereign wealth fund.
"Recently, Manchester City and Paris Saint-German, before that Chelsea, they have money that has not been created [by them] and have been able to get an advantage through this", he told reporters.
Tebas also criticised City's relationship with Spanish top-flight side Girona, recently acquired by City Football Group (CFG), for signing and loaning players for next to nothing from City, in so doing allegedly attempting to "cook the books".
The City Football Group (CFG) added: "As you would expect, Manchester City Football Club and the City Football Group are seeking appropriate legal counsel and will act accordingly on that advice".
The La Liga president made his accusations public at the Soccerex conference in Manchester on Wednesday - where City chief Ferran Soriano was present - as Tebas said, via BBC Sport: "It's a good thing that a club like Girona has a backing, but obviously there is a closer watch from La Liga to that club".More news: Giants: Bring on Ezekiel Elliott
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"Manchester City with all this oil [money] will take all these players and we need to protect ourselves".
European football's governing body Uefa has already said it has no plans to investigate City over the Premier League club's financial situation. City loaned five players to Girona: Douglas Luiz, Marlos Moreno, Aleix García, Pablo Maffeo, and Olarenwaju Kayode.
'These unworthy remarks are unbefitting an institution as respectable and successful as the Spanish league. "That is impossible. That is financial doping".
He claimed: "If there is too much money in the market, prices go up".
"We have seen the accounts of these clubs for the past five years, seeing income from gate tickets, TV rights and commercial income".