The 31-year-old is now expected to feature against Reading in the Capital One Cup, and Wenger has hailed the playmaker's approach.
"I say that because [his attitude] has been questioned. I don't tolerate that," the manager told Arsenal Player. "If that was the case I would not speak about it.
"But Andrey comes in every day and practices well, he is focused and wants to do well. I insist on this, because it was questioned and it is completely unjustified. In this case perception is not reality.
"He is a classy player and a top professional with a great attitude. You could see that when he came on [against QPR], his brightness and his intelligence with the final ball is fantastic."