Lewandowski has expressed a desire to leave the Allianz Arena after eight successful years at the club.
The 33-year-old Poland international has a contract in Bavaria until the summer of 2023 and Bayern Munich have no intention of letting him go this summer.
Lewandowski joined Bayern Munich from Borussia Dortmund on a free transfer in the summer of 2014 and has won eight Bundesliga titles in his time at the club.
The Poland international's list of honours at the Allianz Arena also include one UEFA Champions League, three DFB-Pokals, one UEFA Super Cup and one FIFA Club World Cup.
Lewandowski reportedly favours a move to Barcelona, although Chelsea have also been linked with the current FIFA Men's Footballer of the year.
Asked if he was optimistic of joining Barca, Lewandowski told reporters at a Nations League news conference: "It's a big question.
"I don't like being in this situation. What is certain at the moment is that my story at Bayern is over. I don't see any chance of continuing my career at this club.
"Let's see what we can do in the next two weeks, I don't want to continue and I would like to focus on Poland.
"After the Nations League we will have time to talk about the situation, but I don't see any possibility to continue at Bayern.
"Bayern is a serious club and I hope they will not keep me just because they can. A transfer is the best solution for all parties."
