Earlier this week, the Spurs announced that De Colo will be on the roster for the Summer league.
Today, Tony Parker announced in a press conference in France that De Colo will play with the French National Team this summer. Although it is not really a surprise, it does not make sense with the Summer League roster announcement. The participation of the De Colo to the Summer league was letting us suppose that the Spurs wanted to integrate him directly in the roster for next year.
Nevertheless, Parker also sayd that the Spurs will let De Colo play in Europe for 2 or 3 years.
EDIT July 6th: SpurNando's agent has confirmed that De Colo will play with the French National Team this summer and with Valencia in Spain, next year.