1:40pm: Former Michigan State guard Kalin Lucas has also signed with the Bulls, according to Deeks (via Twitter). It sounds like his contract will be fully non-guaranteed as well.
As our international tracker shows, Lucas also played for a Turkish team in 2012/13.
1:32pm: The Bulls have signed free agent guard Patrick Christopher to a non-guaranteed training camp deal, according to Mark Deeks of ShamSports.com (via Twitter).
Christopher, 25, went undrafted out of California in 2010, and has been playing overseas since then. As our international player movement tracker shows, he spent last season in Turkey with Besiktas. Christopher averaged 8.4 PPG in 24 contests with the club.
The Bulls will only have 15 players under contract once they make their deals with Christopher, Mike James, and Dexter Pittman official, so there's a chance a regular-season roster spot will be available if Christopher has a strong camp. Still, he's likely a long shot.