According to the Herald Insider and Celtics.com, Wally and Scal practiced today and should be available to play tomorrow. Apparently their sense of humor is still very much intact as well

Apparently, Wally Szczerbiak was too busy playing one on one against Brian Scalabrine to talk to reporters, so he addresses them from across the gym.
"Day-to-day, re-evaluated tomorrow," yelled Szczerbiak, who was moving well as he drove to the basket.
"Me too," added Brian Scalabrine, who was guarding Szczerbiak while wearing a knee brace.
"Me too," chimed in Sebastian Telfair, who's presumably healthy but been relegated to minor minutes off the bench as of late as Rajon Rondo has taken his spot as the backup point guard.