News anchor John Suchet - who retired from ITN in March 2004 - is to return to TV newsreading in the New Year as a presenter on Five News.
Suchet will take over from Young while she is on maternity leave
He will host the 5.30pm and 7pm bulletins on Thursdays and Fridays, before taking over full-time when Kirsty Young goes on maternity leave.
"I can't wait to return to the cut and thrust of the newsroom," said the 61-year-old broadcaster.
Suchet worked on the Lunchtime News and News At Ten during his 32 years at ITN.
"Since leaving ITV News, I've been very fortunate to work on my other big passion in life which is my music.
"But I didn't realise quite how much I missed it until I was offered this opportunity," he added.
The veteran newsreader - who is the brother of Poirot actor David Suchet - was an award-winning foreign correspondent for many years before becoming a studio-based presenter.
He left his television job because he wanted to write his autobiography and concentrate on his passion for music.
Since his retirement last year he has presented a show about composers on radio station Classic FM, reported for ITN on the 60th anniversary of the D-Day landings and put in brief appearances on ITV1 daytime show This Morning.