The Australian TV host, who has had her own morning show on the Nine Network for the past eight years, is believed to have angered bosses by giving "short notice" for seven days' leave, resulting in them asking Catriona Rowntree to step into the presenting role at the last minute.
According to the Herald Sun, rumours have now surfaced that Kennerley is arguing with management over the renewal of her $500,000 (£323,000) contract with the TV channel and is said to be frustrated with the constant changes in the show's format.
Nine producers are believed to be concerned that Mornings with Kerri-Anne is consistently dropping in viewer ratings and are considering introducing a new presenting duo to the programme.
A station spokesperson has denied reports that Kennerley will be permanently replaced by Rowntree, saying: "There is no gun at [Kerri-Anne's] head, nor any suggestion her contract won't be renewed, just a determination to rework [the show] and make it better."
Kennerley added: "My experience tells me there's nothing I can say that will stop the [gossip] merry-go-round."
Last year, rumours that Kennerley was quitting her morning programme and being replaced by Rowntree surfaced for the first time. She said: "She's just one of a number of people who want the job. I am not out of contract, [bosses] renamed the show after me and have spent quite a lot of money on it. I would think it unlikely."
Rowntree later insisted that she was not interested in Kennerley's job anyway.
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