Warner has pleaded guilty and been fined $5,750 for breaching Cricket Australia's code of conduct after his expletive-laden outbursts against two journalists on Twitter.
Warner will have a Cricket Australia disciplinary hearing on Wednesday over comments he made on Twitter in often angry exchanges with two journalists.
Warner criticised News Limited journalists Robert Craddock and Malcolm Conn in an expletive-filled tirade, which grabbed headlines in Australia.
The board's CEO James Sutherland defends Australia's current rotation policy, which the former legspinner thinks a joke.
Pietersen took to Twitter to question the credentials of Knight as a Test match commentator for Sky Sports.
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