Late Late Show host Ryan Tubridy will take over a new weekday programme on 2fm to replace the late Gerry Ryan's slot, RTE has confirmed.
The station's flagship programme will run from 9am to 11am - an hour less than The Gerry Ryan Show - and will begin in the last week of August.
Tubridy will leave his present Radio One weekday morning show to take up the new post in a move RTE bosses hope will secure the hundreds of thousands of listeners Ryan had built up.
"I have had a long hard think, and I feel that the time is right to move to 2fm," said Tubridy. "In my new role on 2fm I will be presenting a programme that will be very different, with a different time slot, and a different style of presenting. But I will always be mindful of Gerry and the audience he built up down through the years. I will consider it an honour and a privilege to sit in the chair he sat in for so long."
RTE bosses insisted reports that Tubridy would get a 1 million euro contract for the 2fm move were "inflated, inaccurate and speculative". The state broadcaster said there was no additional fee.
The 2fm mid-morning slot was filled by Colm Hayes and Lucy Kennedy after the untimely death of Ryan in April. But RTE bosses have been anxious to parachute in a big name presenter over fears it was haemorrhaging listeners.
John McMahon, head of 2fm, said he was delighted to welcome back Tubridy to the station.
"I've made no secret that I wanted him back on 2fm," he said.
"Now, with Ryan on board, the future for 2fm is even more exciting."
RTE will announce plans for its new Radio One and 2fm schedule in the autumn.