Celtics sign Abdel Nader, waive Demetrius Jackson

The Boston Celtics have signed rookie forward Abdel Nader, and have waived guard Demetrius Jackson.

Nader, the reigning 2016-17 NBA G League Rookie of the Year, averaged a team-high 21.3 points (44.7% FG, 34.9% 3-PT, 79.4% FT), 6.2 rebounds, 3.9 assists, 1.00 steal, 0.83 blocked shots and 33.5 minutes over 40 games with the Maine Red [...]