Media group UTV has agreed to buy Dublin radio station FM104 from Denis O'Brien's Communicorp for €52m.
The deal is subject to approval from the Competition Authority, the Broadcasting Commission and UTV shareholders.
In October, the broadcasting regulator approved the sale of two radio stations, Today FM and Highland Radio, to Dublin-based Communicorp by British media group Emap, but rejected its bid for FM104 on competition grounds.
However, the Competition Authority earlier this month approved the triple purchase on condition Communicorp sold FM104 on in a short timeframe.
Emap said in July it had agreed to sell the three stations, owned by its subsidiary Scottish Radio Holdings, to Communicorp for around €200m in cash.
UTV's radio division has a number of stations on the island of Ireland including Cork, Limerick, Drogheda and Belfast.