Matt Walsh, the Nets' final cut last season, was on the original roster but withdrew and the Nets replaced him with forward Mike Jones out of Maryland.
Ekene Ibekwe (2003-07) was invited to try-out for the Miami Heat's summer league team, but he was released just before league play began. Here is a link to all of the Orlando Summer League rosters.
On a completely unrelated note, this is blog post #100. Hooray for arbitrary, big round number milestones!