Linebackers Brian Cushing and Jadeveon Clowney will definitely play against Cleveland Sunday, coach Bill O’Brien confirmed Friday, but he also said, as expected, that cornerback Kareem Jackson is out. All have been dealing with knee issues. Fortunately, the Texans will be getting reserve corner Darryl Morris back from a high ankle sprain and Johnathan Joseph will start, having practiced all week after suffering a concussion against Philadelphia two weeks ago.