Manchester City are showing major interest in Bayern Munich striker Robert Lewandowski.

The Sun says City had scouts watching Lewandowski as he scored twice in Bayern Munich's 4-0 demolition of Mainz.

The Polish striker publicly criticised the club's transfer policy this summer after chiefs refused to compete with moneybags Paris Saint-Germain.

And City boss Pep Guardiola is ready to capitalise on the situation as he keeps tabs on Lewandowski, with a January swoop on the cards.

He has scored five times in four matches this season despite speculation about his future.

Lewandowski would spark a bidding war between Europe's top clubs should he become available.

And City could benefit from the hitman's relationship with Guardiola after he thrived in the Spaniard's title-winning side.