"The Celtics are downplaying Jeff Green's medical-related absence from the practice floor, but the uncertainty of his situation has attached a red flag to undisclosed results from his recent physical.

According to team officials, the newly re-signed forward was traveling yesterday to have further tests.

"We really don't know," Doc Rivers said after yesterday's practice. "They're still doing tests. I knew already he wasn't going to be here.

"(Team president) Danny (Ainge) told me not to expect him for the next couple of days.""