Barca are not allowed to buy players for the next two transfer windows and were fined £305,000 after they were found guilty of breaching restrictions on the signing of 10 teenagers between 2009 and 2013.
Wenger said: “They have not respected the rules. The rule is quite simple, you cannot move the players before the age of 16 unless their parents move for professional reasons, so that of course creates a bit of debate — do the parents move for professional reasons or not?
“In this case, FIFA have judged the parents moved for football reasons and that is why they were banned because they have not respected the rules. At the time they were critical of us, you look at their players, even their players who have come out from their youth academy, people like Andres Iniesta, he came from a very young age from the north of Spain. So they have always scouted people from all over Spain.
“I think the rules need to be changed because there is more and more competition now to get the young players. You always will be in a debate. There is more and more money in the game so the parents will be tempted to give a chance to the young boys to make a great career.”
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