Of course the Lakers have the money. As I said, if LeBron leaves, it will be most likely be a sign and trade. The teams with "cap space" are just whistling in the dark. LeBron will stay in Cleveland before he goes into a rebuilding situation with teams like the Nets, Knicks or Clippers.
The question is, do the Lakers have players that Clevland wants back. They probably do, starting with Andrew Bynum.
A likely deal would be Bynum, Odom and Farmar for LeBron and any necessary cap fodder. Maybe the Lakers also throw in a first rounder.