I know many of them are not NBA players, but based on the social media posts put out by the team, many of which were captured in the front page article about the Boozers visit (see link below), it looks like he held what they labeled "Pro Devils Weekend". It was an incredible collection of recent Duke players, especially big men.
Based on the photos, I saw...
RJ, Keels, DJ Stewart, Lively, Vernon Carey, Cassius Stanley, Jah (looking lean), Jared McCain, Marques Bolden, Mark Williams, Battier, Dahntay, Daniel Ewing, Hairston, Bilas, Theo John
Here's the front page story
The Brotherhood turned out in a big way
www.dukebasketballreport.com
The Duke Men's team IG account posted all the photos that I was reviewing, @dukembb