Eric averaged 0.5 rebounds in 3.5 minutes per game in two games during the preseason for Cleveland. Eric, a 6'11 center out of Temple, also played in five games during the 2012 NBA Summer League where he averaged 4.0 points and 3.8 rebounds in 12.6 minutes per game.
Jones, a Big East standout from West Virginia, averaged 2.5 rebounds in 9.0 minutes per game in two preseason games.
Brown, who started 91 games in his career at Cleveland State, signed with the team Oct. 25 before being waived on Saturday.
Cleveland now has 15 players on its current roster.
The Cavaliers will look to improve upon last season's 21-45 record when they open the regular season against the Washington Wizards Oct. 30. Cleveland finished in last place in the Central division last year.