In 2014 , he was promoted to head midseason in 2015 - 16 , replacing the fired David Blatt .
After his playing career ended in 2009 , Lue became Director of Basketball Development for the Boston Celtics .
In 2014 , Lue was promoted to head midseason in 2015 - 16 , replacing the fired David Blatt .
After his playing career ended in 2009 , Lue became Director of Basketball Development for the Boston Celtics .