Haaland is the number one target, though Chelsea have been unable to agree with Dortmund so far, with the German against reluctant to let the Norwegian go having already sold Jadon Sancho to Dortmund.
According to The Sun, they are preparing a £50 million bid for Lewandowski if they cannot secure Haaland.
The Poland international has been the best centre-forward in the world over the past two seasons and in the 2020/21 campaign broke the record for the most goals scored in a single Bundesliga season – a record previously held by legend Gerd Muller.
In all competitions last campaign, he scored 48 goals and recorded nine assists.
It remains to be seen whether the reports from the British press are to be believed, but if Chelsea do secure Lewandowski they will have a truly formidable forward line.