The interesting thing about the Knicks is that they'll have enough money to sign LeBron and another max level contract guy (like a Chris Bosh).
I honestly think the Nets are the best team for him because if you watched them last year they have talent but had injuries to Lopez, Lee, Yi, Harris at one point during the entire year. The last 10-12 games or so when everyone was fully healthy they were fairly competitive, all they needed was a big name and a few role players.
I think (if) the Nets draft Favors, sign LeBron and a couple of cheap role players and they are a dangerous team.
C: Brook Lopez:
F: Yi Jianlian/Derrick Favors
F: LeBron James
G: Courtney Lee/Terrence Williams
G: Devin Harris
Bench
F: Yi Jianlian/Derrick Favors
G: Courtney Lee/Terrence Williams
A lot of options with those guys too, you can bring Favors and T-Will off the bench as super 6th men (play ~30 mins) keeps your offense good while your starters rest.
All in all this is probably just a mad dream, because we likely aren't getting LeBron.