Arsenal boss Arsene Wenger has slammed Chelsea's loan system.

Wenger has taken aim at Chelsea for sending so many stars out on loan in order to balance the books and meet Fifa's Financial Fair Play regulations.

"It is one of the big problems in the modern game," Wenger told Arsenal's official magazine.

"You've invested a lot of money into players because we're paying more and more money, and then at the age of 20 you don't usually get much money for any of the players, so the reflex is to stockpile the players. That's not right.

"When you look at the number of loans that happen here and there, the whole system has to be thought about again because we have two kinds of solution in there.

"The first is to continue developing players, the second step is just to make sure your investment is safe – that's not the right way to think about it but it's the natural reflex for the clubs."