Bill Turnbull is set to be reunited with his former co-anchor Susanna Reid when he steps in for Piers Morgan on Good Morning Britain.
The Suffolk broadcaster fronted BBC Breakfast for 15 years and left in February 2016. Four years on, he will take a seat on the GMB sofa on February 24, 25 and 26.
He admitted a return to early starts could prove challenging.
"I’m in two minds about the early mornings! On the one hand, it’s great to be back doing live television. The other part of me thinks, 'What on earth am I doing?’, having sworn never to do breakfast television again!"
Turnbull is likely to bring a different style to the Good Morning Britain set.
"I don't have such strong opinions as Piers," he said. "And I don't voice them as much as he likes to. There are quite a few differences between us."
But he is looking forward to being reunited with Susanna Reid.
"Susanna’s an old friend. I first worked with her in Washington when I was a correspondent and she was a producer, which must be 25 years ago.
Turnbull was diagnosed with prostate cancer in 2017 - revealing his news on a celebrity edition of The Great British Bake Off.
He later appeared on Good Morning Britain to talk about living with cancer and joked about taking over from Piers.
"When Bill came into GMB, he joked about filling in for Piers - and now he is! It will be lovely to work alongside him again. I expect Bill presenting a breakfast show again will be like a duck taking to water - if the early alarm call isn’t too much of a shock."
Veteran broadcaster Bill was told his cancer was incurable but continues to work as much as his body will allow.
He said his age was more of a hindrance to him these days than his illness - but admitted the hot flushes that came with his hormone treatment could be "slightly awkward in the studio".
"Normally what happens if I get a hot flush, I get all red in the face and I take my jacket off and cool down. I’m not sure I’m going to be able to do that. We may need to get a little fan."