By Alan Baldwin LONDON (Reuters) -McLaren boss Zak Brown called for permanent stewards in Formula One after the governing FIA dropped former racer Johnny Herbert on Wednesday, arguing his work as a media pundit was incompatible with the role.

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The former F1 driver was in line to be a steward at the season-opening race in Australia but was criticised by Jos Verstappen last year for his dual role as steward and pundit