Celtics News: Brad Stevens Says Kemba Walker's Knee 'Isn't Cause for Concern'<br /><br />The Boston Celtics have been in the Orlando bubble for one week now, but they still have not had a full practice with All-Star point guard Kemba Walker. The veteran point guard first started experiencing knee discomfort around the All-Star break in February and it appears he is still trying to recover despite the NBA's four month hiatus.<br /><br />Celtics Coach Brad Stevens insisted that the Celtics are just being cautious and fans have no need to worry about Kemba's knee.
