The actor, 70, had complained of being bored in the jungle as worried producers excluded him from most Bushtucker Trials for health reasons.
'I'm not going to go head to head, so I'm thinking about leaving, pulling out tomorrow,' he told Kim Woodburn, 67.
'At my age, the time I have with people I care about is important. I don't see a purpose for me to stay.'
George is the third contestant to quit the ITV programme.
Camilla Dallerup, 33, left after just 3 days and Jordan, 31, walked out after less than a week.
George will appear on tonight's I'm A Celeb to explain his decision to leave.
Where to next?
- See the remaining celebs in the jungle
- Bushtucker trials
- More celeb pics