There is no word on whether or not this will be an actual contract the Celtics will sign Milicic to, or if it will be merely a training camp invite. Helin says that the likelihood of this being a full signing with a guarenteed contract is pretty slim.
Boston plans to play small a lot this year...Thing is, Boston already has Jason Collins for that role. Plus they have Chris Wilcox off the bench. The Celtics have no available roster spots to put anyone, and while size is always a premium I'm not sure they eat a contract to add Darko to the roster.
If Milicic does sign with the Celtics, it would be his sixth team since being drafted at No. 2 overall in the 2003 NBA Draft by the Detroit Pistons. Over his career, he has averaged 6 points, 4.2 rebounds and 1.3 blocks per game.