Samuel Eto'o is now the highest ever paid athlete thanks to his €20 million-a-year contract with Anzhi.
"I believe you spend the money you have in the club and [give it] to people who deserve it," said the Arsenal manager.
"I am very happy when the players make a lot of money, with one restriction, that the attitude has to be right. That means you have to show you give absolutely everything to deserve it.
"For the managers it is exactly the same, that you have an honest behaviour towards your club, that means you give everything to justify the money you make. If that money is what the club earns, I am alright with that."