PRO FOOTBALL / DAILY REPORT : RAIDERS : A Better Look at Cowboys in Store

After practicing for three days against the Dallas Cowboys two weeks ago, Raider Coach Art Shell expects a different opponent when the teams play Saturday night at Dallas.

“I’m sure that (Dallas Coach Jimmy Johnson) will have them ready to play,” Shell said. “They might not have all the people that they are going to have (during the regular season), but they will be ready.”

A possible addition for the Cowboys is quarterback Troy Aikman, who had been sidelined because of a back injury and returned to full-contact drills this week.

“I wouldn’t rule it out completely,” Johnson said. “I would say 99% right now that I’ll hold him out. He did practice (Wednesday), and he’s going through everything in practice. I’m really not going to decide when to put him in until that day comes.”

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Offensive tackle Gerald Perry will miss his second consecutive game because of a tricep injury. Greg Skrepenak will start in his place for the second game in a row. . . . Offensive tackle Steve Wright, who had been sidelined because of a shoulder injury, practiced in full uniform Wednesday and might play against Dallas. . . . Linebacker Winston Moss, who did not play in the Raiders’ 27-0 loss to San Francisco last Sunday, is expected to play against Dallas. . . . To make room on the roster for Howie Long, the Raiders released tight end Greg Harrell.