The Celtics signed former Memphis Grizzlies guard-forward Dahntay Jones and Atlanta Hawks forward-center Estaban Batista to non-guarenteed contracts and will join the team in Europe for training camp, bringing the roster to 17.

Jones, who has played his entire four-year career with the Grizzlies, played in a career-high 78 games last season. He averaged 7.5 points and 2.0 rebounds per game.

Batista, 6-foot-10, 270-pound Uruguay native, played sparingly for Atlanta last season, but averaged a tournament-best 12.4 rebounds and 20.8 points during the recent FIBA Americas Championship in Las Vegas.