Eurobasket.net reports:

Italian champion Montepaschi Siena has put some young energy into its lineup by signing forward DaJuan Summers to help try to get back to the Turkish Airlines Euroleague Final Four next season. Summers (2.03 meters, 23 years old) arrives from Detroit of the NBA, where he played in 66 games over two seasons, averaging 3.2 points in 9 minutes per game.