The Germany international has been a one-club man for his entire career.
"There will probably be a decision one way or another about my contract in the summer," he told The Athletic. "We will see.
"No-one picks the team according to the loudest cheers from supporters. I don't like it when someone says the club need me because of all those other factors, I don't want to be in the team because of that.
"For me, it's all about football and performance. No-one deserves to be in a team because they're maybe more recognisable as a face and good for marketing.
"That's all good and well but you have to earn your place. If I felt I could no longer help the team and they played better without me, then that's how it is. It's all about FC Bayern winning."
Manchester United have been linked with Muller, who they tried to sign in 2014.
And Muller added that a potential move to Old Trafford was on the cards.
"Things were serious when Louis van Gaal came in [in 2015], for all sides involved.
"I could imagine going to Man Utd then. But the club said: "We want you to stay". I wasn't out of contract, that's why it was pretty clear-cut in the end. But it wasn't just a poker game."