Antonio Brown returns, but when will be practice again? “Stay tuned”

Oakland Raiders’ Antonio Brown (84) stretches during a minicamp practice at the team’s facility in Alameda, Calif., on Tuesday, June 11, 2019. (Anda Chu/Bay Area News Group)NAPA — Antonio Brown made his first appearance at Raiders training camp in two weeks Tuesday but it is unknown when the receiver — sidelined with frostbite in his foot — might be able to practice again with his new team.

“You guys are going to have to stay tuned for that,” Brown said.

At approximately 11:05 a.m., Brown, with cameras from HBO’s “Hard Knocks” in tow, walked onto the far side of the practice field and in the direction of the Raiders’ weight room. He then made his way toward the field where the Raiders were…