PHILADELPHIA -- There are some challenges that come along with being 7-foot-5. One of them is being aware of how low certain ceilings are.

Before the Boston Celtics shoot around at the Wells Fargo Center in Philadelphia, Fall explained to MassLive that he was trying to wash his hands after a workout at the practice facility but didn’t notice a “low ceiling."

Fall hit his head, but initially thought nothing of it. He later participated in the Celtics swim lesson event at the Charlestown Boys and Girls Club with no noticeable effects. He says he even went back to the Auerbach Center afterwards to get more work in.

However, the next morning he woke up and wasn’t feeling well.

“Tacko got hit in the head yesterday after individual work,” Stevens said at the time. “He was a little under the weather. It sounds like being very cautious about that.”

Fall was ultimately forced to enter the NBA concussion protocol, but he was seen around the team and on the practice floor in the days since. He traveled with the team to Philadelphia and was participating in the team’s morning shoot around. He told MassLive he expects to be cleared “real soon,” which Brad Stevens confirmed.

“Very close (to a return) from what I’ve been told," Stevens told reporters. “But he wasn’t going to be active anyway.”