ALAMEDA -- Raiders weakside linebacker Aaron Curry, who has not practiced since minicamp in June and has been on the PUP list since Aug. 31 with sore knees, is eligible to begin practicing on Oct 16.Coach Dennis Allen said he expects Curry to hit the field next week."I think hes made some progress," Allen said of Curry. "Its different when youre doing your rehab work as opposed to when youre actually out there playing football. It will be a great deal for us to get him out here, get him working some football, running around and doing some football movement and really getting back into the swing of what were doing defensively because its been a while since hes gotten an opportunity to participate."Approached by reporters after practice in the locker room, Curry said he was not "allowed" to speak to the media. In training camp, though, he confirmed to CNSCalifornia.com that he had undergone stem-cell therapy on both knees with bone marrow taken from his hip.And once Curry begins practicing, the Raiders have 21 days in which to decide whether to activate, waive or IR him."We'll evaluate it," Allen said. "I'm not going to set up a time frame for him. I know that once he starts practicing we got basically a three-week window to see where he's at and see if he's ready to play football. If he is, we'll activate him, and if he's not, we'll cross that bridge when we come to it."Rookie Miles Burris, a fourth-round draft pick out of San Diego State, has started in Curry's place.