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Report: WR Antonio Brown to rejoin Raiders on Tuesday

Oakland Raiders wideout Antonio Brown will be at training camp Tuesday in Napa, Calif., ESPN's Adam Schefter reported.

Brown, who lost his helmet grievance against the NFL on Monday, has not been with the team since he left practice early on July 30.

The 31-year-old veteran had sought permission to wear his old helmet, which is no longer certified. He revealed his feelings about the decision on his Instagram account.

"While I disagree with the arbitrator's decision I'm working on getting back to full health and looking forward to rejoining my teammates on the field," Brown wrote Monday.

Pro Football Talk reported Monday that the NFL will let Brown wear his preferred Schutt Air Advantage helmet if he can find one that is less than 10 years old.

On Tuesday, Brown turned to Twitter for help locating one. "I'm looking for a Schutt Air Advantage Adult Large Helmet that was manufactured in 2010 or after. In exchange I will trade a signed practice worn @Raiders helmet."

The Raiders acquired the seven-time Pro Bowl selection from the Pittsburgh Steelers in a trade in March and later signed him to a three-year, $50.125 million contract.

He caught at least 100 passes and exceeded 1,200 receiving yards in each of the past six seasons with the Steelers. He appeared in 130 games with Pittsburgh from 2010-18, catching 837 passes for 11,207 yards and 74 touchdowns.