Via the report:

PFT has confirmed with a source close to the situation that the NFL, the Raiders and Brown’s representatives have been in contact, and that the NFL has approved Brown wearing the helmet model he wants — the Schutt AiR Advantage — if he finds a helmet that fits him and is less than 10 years old.

Schutt stopped making the AiR Advantage in 2011, and Brown’s helmet is more than 10 years old. But there are AiR Advantage helmets out there that are eight or nine years old, and if Brown can find one that fits him properly and is in good condition, the league will let him wear it, the source said.

Apparently he hasn’t found one yet.  

👇