Financial Fair Play rules have failed and could be scrapped altogether in the future.

Wenger was an advocate of financial restrictions when they were first introduced and has long operated within Arsenal's 'self-sustaining' business model.

But the Frenchman first voiced concerns about a "softening" of the rules as far back as 2015, and in the wake of Neymar's recent world-record transfer to Paris Saint-Germain he said: "Once a country owns a club, everything is possible."

PSG are now the subject of an FFP investigation, but Wenger has suggested the restrictions could be abandoned completely in the future to attract bigger investment from overseas.

"Financial Fair Play raises new questions," said Wenger, who sanctioned Arsenal's club-record purchase of Alexandre Lacazette this summer. "Today I am not very convinced that we can maintain it.

"Football is maybe only at the start of a huge financial investment. It has become the most powerful sport in the world.

"That means, do we have to open the door completely? To investments? That is a question we have to raise, because at the moment it looks like we have created rules that cannot be respected.