Mustafi was given a fresh start by Arteta and is starting to emerge as an unlikely defensive rock after starting Arsenal's last six games.
He said: “Even though I've played for many years I'm learning a lot from Mikel.
“He speaks about stuff I've never heard before — simple things, but stuff that you have to remember.
“Football is so quick and so complicated these days. There is so much stuff you have to think about that sometimes you start to forget the easy things.
“Mikel is putting the basics back into the team. We still need to work on it a lot because we still complicate our lives too much.
“I think he has had a very good impact on the team."