The Boston Celtics must use the coming days and weeks to determine how deep their pool of talent really is. ESPN’s Bobby Marks on Tuesday identified the Celtics’ inexperienced bench as the biggest question the team faces as training camp ramps up. Boston dramatically reshaped its roster this offseason, with veterans with Kyrie Irving, Al Horford, Terry Rozier, Marcus Morris and others departing, and Kemba Walker, Enes Kanter and a host of rookies arriving as replacements.
