Former Knicks coach Tom Thibodeau has been bouncing around practices for different teams, and on Monday he was spotted with the rival Celtics. “That was awesome having Thibs. Obviously, they eliminated us last year,” Celtics star Jaylen Brown told reporters. “So him being able to kind of give us some of the thoughts that he saw in that series and some of the stuff that they broke down in our personnel, or even our team, helps us grow and learn from that. “To have Thibs here at our practice