Chris Wilcox could miss one month with a sprained ligament in his right thumb, according to Doc Rivers.
Wilcox had been a solid contributor for the Boston Celtics this season, but he suffered the injury in Tuesday's loss to the Chicago Bulls.
"Chris is out; he's out for a while," Rivers said. "I don't know how long (but) the first report I got was three to four weeks. He'll be out."
The Celtics could now look to sign a free agent big man, which Rivers admitted.
"You would think (we would sign someone)," Rivers said. "But obviously that's the one position where they don't grow on trees. We just have to be patient. Obviously we need another big (man) with Chris being out. I don't know if we're going to get another big on this (four-game) trip."