Second-year forward JaJuan Johnson becomes the first of the players released by the Rockets as they get to the maximum of 15 by Wednesday.
Johnson's agent, Kevin Bradbury, told FOX 26 Sports the move was not surprising, but still disappointing.
"There's been a possibility this might happen all through camp, so there's been discussions," Bradbury said. "Obviously with the trade last night taking back more players than they sent out, I figured the writing was on the wall."
Johnson played in two games during the preseason, averaging five points and two rebounds.
He was acquired in the sign-and-trade that sent Courtney Lee to the Boston Celtics.
"He's pretty disappointed," Bradbury said. "Obviously any time you get released you're not happy about it.
"At the same time he hasn't had much of an opportunity to prove himself at any point during the camp. What we'll do is we'll look forward to the opportunity to doing that somewhere else."