The Germany defender has been reflecting on what impact Arteta has made at the club since joining in December.
"He's a little like a professor," Mustafi tells Sky Sports News.
"He knows exactly where he wants the players to be when on the ball and how to react when losing the ball. It's very special.
"When I pass I am usually only focused on where to be if we lose the ball but he wants me to contribute offensively too. So we constantly need to make an option for the player on the ball.
"When you are 28 and you play in different countries with other coaches you think you know everything but then he came in and there are things I've never known before."