"He wants to play Saturday but we've got to be smart," Oakland Raiders head coach Turner said. "We'll have a better handle Thursday.
Gallery is competing for the starting left tackle spot with Barry Sims.
Gallery has been working out with the second team behind but the rookie from the University of Iowa played nearly the entire first half and the first series of the second half last Saturday against the 49ers.
Raiders projected starting right guard Ron Stone returned to practice Tuesday afternoon.
Stone, whom the Raiders acquired as a free agent from San Francisco, had been out of action since the second day of training camp with a hamstring injury. Stone did not play in the Raiders 33-30 win over the 49ers but he might play Saturday when Oakland hosts the Dallas Cowboys.
"He did a little more today," Oakland head coach Norv Turner said. "I think he's ready to do more and more."
Tight end Teyo Johnson and linebacker Akbar Gbaja-Biamila got into a bit of a melee in the afternoon practice. It happened when linebacker Tim Johnson intercepted a Rich Gannon pass that was tipped. Then away from the play, Johnson and Gbaja-Bilamila exchanged blows before the coaches broke up the skirmish.
Johnson did not return to participate in the remainder of the practice.
The Raiders waived fullback J.R. Nicklos and signed defensive lineman Pepe Zellner and linebacker Maugaule Tuitele.
Plays of the day
Besides Johnson's interception, free safety Ray Buchanan made a couple of nice pass breakups. Wiide receiver Alvis Whitted caught a 60-yard bomb from Gannon in stride, beating cornerback Denard Walker. Whitted, known more for his speed than leaping ability, also made a sensational leaping grab of a Kerry Collins pass in the back of the end zone in a 7-on-7 drill.