The Lakers had a busy off-season, bringing in eight new players while re-signing three.
Dwight Howard, Earl Clark and Chris Duhon came from the Orlando Magic via trade. Steve Nash was acquired through a sign and trade with the Phoenix Suns. Robert Sacre and Darius Johnson-Odom were both picked up in the second round of the 2012 NBA Draft.
Under typical circumstances, when a player signs as a free agent over the summer, they cannot be traded until Dec 15. Now that that date has been reached, the Lakers are now able to deal most of their free-agent acquisitions.
This isn't to suggest the Lakers are actually looking to make any specific moves, but technically Jodie Meeks and Antawn Jamison are now trade eligible.