The 49’ers got some bad news on Wednesday as receiver C.J. Brewer tore a ligament in his right knee, and will likely miss the 2007 season. The tight end was a longshot to make the roster, but did make strides this offseason and camp after spending last year on the 9’ers practice squad. “It’s just a road bump,” Brewer said. “I’ll be back in the offseason, ready to compete again.” He will have surgery on Friday to repair the knee, and then will begin the rehab process. Brewer signed with the 49’ers after he was not drafted after his senior season at Wyoming in 2005. Brewer was not even allowed to play in NFL Europe this summer, because league doctors couldn’t detect an ACL in his left knee. He tore that ligament four years ago.