The 34-year-old had been with the Lakers since 2008 where he won two NBA titles.
However, with the Lakers in rebuilding mode, the free agent has decided to join confernence and go east to play for the Bulls.
He confirmed the news on Twitter.
Kevin Durant out indefinitely with foot injury
21/03/2015 AT 07:33
Pau's tweet
More to follow
LeBron's Cavaliers offer Wiggins for Love
18/07/2014 AT 23:38
LeBron James to return to the Cleveland Cavaliers
11/07/2014 AT 15:28