The 32-year-old striker netted 41 league goals in the 2020/21 season for Bayern to break Gerd Muller's Bundesliga record, which had stood for 49 years.
He is currently focused on Poland's campaign at this summer's European Championship, but his agent Pini Zahavi is bound to be busy in the coming weeks.
AS reports Lewandowski is 'open to the possibility of changing of scene and facing new challenges' this summer - a stance which will be music to the ears of Bayern's rivals.
Bayern are understandably 'very reluctant' to lose their main man, but the Polish striker already 'has offers from several top teams'.
The Spanish giants tried their luck again in 2016, but the Pole ended up renewing his contract with Bayern.