According to ESPN Boston, 2016 Celtics 1st-round selection (23rd overall) Ante Zizic will be skipping out on the EuroBasket tourney this summer so he can focus on joining his NBA team this summer and next season:
Chris Forsberg spoke with Austin Ainge last month and the Celtics director of player personnel said that the plan was to sign the Croatian born Zizic as soon as he was eligible this summer:
"July 1 just has to roll over on the calendar, and we’ll sign him," Celtics director of player personnel Austin Ainge said a few months ago.