Lewandowski scored 29 goals in 30 Bundesliga games this season and has 151 in 195 games in all competitions in total for Bayern.
Lewandowski's agent Pini Zahavi confirmed to Telegraph Sport that his client wanted to leave and Zahavi stood by quotes he gave to Sport Bild magazine in which he said the Bundesliga's top scorer "feels that he needs a change and a new challenge in his career".
Bayern chairman Karl-Heinz Rummenigge recently ruled out a transfer, however, saying: 'We know what we have in Robert Lewandowski.
"Robert's reasons have nothing to do with money or any specific club because nearly all of the top clubs would like to have the best striker in the world on their books".
"Everyone in the club hierarchy can boast of a great career".
"They should understand the situation".
We have been given the clearest indication to date that Robert Lewandowski's proposed move to Chelsea this summer is not just a pipe-dream.
Rummenigge also described the player as "completely loyal" and stated that he expected him to honour his contract, which expires in 2021. "Nobody need worry, he will also play football here in Munich next year", he said.