Nikola Vucevic leaving the Boston Celtics this summer is seen as a "certainty," sources told Marc Stein of The Stein Line.

Vucevic, who was traded to the Celtics at the deadline, played just 16 games with his new team due to a fractured right finger.

The also 35-year-old averaged 6.2 points in 19 minutes over six playoff games this season.