The versatile attacker made 51 appearances in all competitions under coach Pep Guardiola over 2013-14 but was often overlooked for a starting role, with Mario Manduzkic and Mario Gotze frequently ahead in the pecking order.
With Robert Lewandowski set to arrive this summer on a free transfer, talk has grown over a possible summer transfer for the Germany international, with Manchester United rumoured to be considering a move, and the 24-year-old has questions over his long-term future.
"I've reached a point where I want to know, before next season, if I'm a key component of the Bayern XI," Muller told Bild, "and if the club really has a plan for me for the next few years. That's why I am looking to have this conversation.
"I'm not standing before the jump now but I cannot give any guarantees forever."
Muller is currently preparing for the World Cup with the Germany squad, with Joachim Low's side to face Armenia in their latest pre-tournament friendly on Friday.