Antonio Brown and Raiders general manager Mike Mayock got into a heated exchange Wednesday, and the team is now planning to suspend its star wide receiver, league sources told ESPN’s Adam Schefter.

The confrontation, according to Schefter, stemmed from Brown’s Instagram post Wednesday when he displayed a letter from Mayock that detailed about $54,000 in fines for missing time during training camp.

Now we’re learning details of the confrontation. 

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