That's a weird take, why Eastern European? Just because of Lewandowski?
I don't think Haalands nationality or ethnicity would be any issue whatsoever, but wether Bayern would make a better offer than any other teams in for him.
Not just because of Lewandowski, many Eastern European (I was including the likes of Austria there but probably my mistake) players play or played in Bundesliga and my point is, most German and foreign Bundesliga players who didn't just use Bundesliga as a sprint board for something greater elsewhere (like many have done in the past, and many have failed for sure) aspire to play for Bayern but I don't think that is the case for Haaland.
Bayern currently is the best team in Europe and has a very good project, perhaps (I am not completely convinced). Sporting wise Bayern is certainly very attractive, other things, can they offer more than the English and Spanish clubs? I don't know.