Terry Glenn, the Cowboys' receiver who is recovering from two knee surgeries, was at the team's facility Thursday doing weight training while the team practiced. Glenn said he expects to return at some point this season but doesn't know when. "His spirits are good," coach Wade Phillips said. "He's rehabbing his quad; they are building that up. Once you have a knee operation, you need the quad to go down, so they're building that up." It could take one or two weeks for Glenn to get enough strength in the quad before he starts running. Glenn said after his first surgery ? to remove a cyst in August ? he came back too fast. The second surgery Sept. 13 was to clean up loose cartilage.