According to multiple reports, big man Joe Smith is heading back to the Oklahoma City Thunder . Smith has been mentioned as a possible addition for the Boston Celtics  front court. On Tuesday he was traded to the New Orleans Hornets  as part of a deal for Tyson Chandler . However Chandler, who has been sidelined with an ankle injury, did not pass the Thunder’s physical. This means the 6-10, 225 pound Smith could be back on the market. Even though the Celtics are not expected to make any major moves , they do have a roster spot made available by the Sam Cassell trade. The NBA trade deadline is Thursday.