Donna Air leaves Big Breakfast
The 21-year-old left the troubled show by deciding not to renew her contract, although press reports indicate she was sacked from the job.
An insider told The Mirror: "I'm afraid the viewers didn't like her. It was suggested it might be time she considered her future - she did and she's gone."
A Channel 4 spokeswoman told Digital Spy: "It's true that Donna will no longer be appearing on the Big Breakfast.
"From now, Amanda Byram will present along with Richard Bacon and other guest presenters".
The move could be part of a final attempt to revive the show, before a decision on its future is made at the start of June.