CINCINNATI -- The Bengals have released second-string quarterback J.T. O'Sullivan, who struggled during the preseason.
Palmer's younger brother, Jordan, is the third-string quarterback.
The Bengals replaced O'Sullivan -- at least temporarily -- by claiming quarterback Dan LeFevour off waivers from Chicago on Sunday.
LeFevour was a sixth-round pick from Central Michigan, where he threw for more than 12,000 yards and ran for more than 2,500 during his career.
LeFevour's coach at Central Michigan was Butch Jones, who is in his first season at the University of Cincinnati.
The Associated Press contributed to this report.