Daniel Theis (knee) believes he’ll be 100 percent for training camp

Winslow Townson/USA Today Sports

BOSTON -- The Celtics had their fair share of high profile injuries last year between Gordon Hayward and Kyrie Irving, but they lost another key contributor for the final few months of the year in Daniel Theis. 

The German big man suffered a torn meniscus on the same night that Marcus Smart tore ligaments in his thumb last March and had surgery to repair the injury just over four months ago.

Theis was back at the Celtics' new practice facility on Wednesday afternoon, surprising some kids from a local Boys and Girls club with autographs and a meet and greet before giving an update on his recovery.

"I started change of direction and cutting today," he said. "I've been sprinting this whole week, jumpshots since last week. I've been progressing day-by-day and week-by-week now."

Theis insists he will be 100 percent by training camp, but knows he has a long road left in his recovery.