The Boston Celtics still don’t know much about Mickael Pietrus’ concussion, but Danny Ainge told WEEI the injury is not expected to be season-ending and the Celtics should know more within four or five days. (WEEI)

“He still has concussion symptoms and until he’s asymptomatic, no headaches and no sensitivity to light, we won’t even be able to test him,” Ainge said. “The league has implemented new procedures once he becomes asymptotic and he’s not there yet, although he is improving each day.”

Asked if he thought there was a chance that Pietrus doesn’t return this season, Ainge said, “We’re not thinking that way at all. There’s not a whole lot we can do. If we find that information out we’ll have to react and go get someone out of the D-League or something. Right now, I don’t see how that would happen. He is getting better each day.

“I anticipate within the week that he’ll start getting tested and get back to practice,” Ainge continued. “I don’t know how long that process goes either. We’re not in a rush to get him back as much as we want him to come back and be healthy. I think we’ll know more in the next four or five days.”

Good news. Get healthy, Mickael.