The trade deadline is Thursday and the Celtics are working the phones trying to put a deal together to fill the void left by Marquis Daniels, who has been sidelined since Feb. 6 with a bruised spinal cord and likely could miss the rest of the season. Daniels's agent, Mark Bartelstein, has offered no updates on the guard's recovery and coach Doc Rivers said the team doesn't expect Daniels to return in the foreseeable future and with that the Celtics have begun to sift through possible trade options, knowing they don't have many moveable pieces. "We're going to be active,'' Rivers said, when asked about the looming trade deadline. "We aren't going to do anything super, but we're going to be active. We're clearly looking. We don't have a lot of assets to move.''