So this is where we may have a different opinion. Technically, don't you want to see the Mavericks succeed if you are a Luka fan? Same for the next team, if he leaves, even if it is not the Knicks? Maybe not a "fan" of that team but I would think that you would root for them. That is what
WASHED KING
does.
On the other end of the spectrum I think there are people who grew up all over the country as Magic Johnson, Kobe, Shaq fans that became Lakers fans in the 90s and 00s then are now lifelong fans which I don't see a problem with. Contrary to what
@sohi 23 said, I don't think there are Bulls fans all around in the country anymore. I think the Lakers are different because they have had the exciting players combined with team success for 40 years now.