If Chelsea don't sign Haaland, they will most likely go for Lewandowski or Lukaku. I'm curious whether Lewandowski would want to go to Chelsea this summer. But it seems to me that there is a really low probability for it to happen. Because I think that not only Bayern but also Lewandowski wouldn't like this kind of a deal now. Lewandowski is really happy there.
Both Halland and Lewandowski will stay in the bundesliga. Especially Lewandowski he is really happy in Bayern and has won everything he can and made some big records with them so i dont see a point of changing clubs. Halland can leave but i think we are already too close to the start of the season for him to leave
If Haaland doesn't sell this year and Dortmund doesn't extend his contract, his contract expires next year. BvB Dortmund could lose a football star like Haaland for free with no revenue. They are also aware of this. So if the contract cannot be renewed, it would be more profitable for them to sell it.